Develop Reference

How to target and display error message with data-error in JavaScript

I'de like to validate a form with data propriety data-error and data-error-visible. I want to display the error message only with JS and don't use anymore HTML codes to do it.
The current code I use is below and I left only the first input :
/******
*
FORM VALIDATION
*
******/
// DOM
const formData = document.querySelectorAll(".formData");
const form = document.getElementById("form");
const firstName = document.getElementById("firstName");
const lastName = document.getElementById("lastName");
const email = document.getElementById("email");
const birthdate = document.getElementById("birthdate");
const quantity = document.getElementById("quantity");
const tournament = document.getElementsByName("location");
const checkbox = document.getElementsByName("checkbox");
// form preventDefault + checkInputs function
form.addEventListener('submit', e => {
e.preventDefault();
});
/***********
*
DATA-ATTRIBUTE
*
************/
// set error message to "true"
const displayErrorMsg = (element, message) => {
const formData = element
formData.setAttribute("data-error", message)
formData.setAttribute("data-error-visible", true)
}
// Function for remove one error msg
const removeErrorMsg = (element) => {
const formData = element
formData.removeAttribute('data-error')
formData.removeAttribute('data-error-visible')
}
/***********
*
* VALIDATION FUNCTION
*
************/
function validate(formData) {
let isFormValid = true;
// Regex
const nameRegex = /[a-zA-Z]+/i;
// First name
if (firstName.value.match(nameRegex) || firstName.value.length < 2) {
isFormValid = false;
displayErrorMsg(firstName);
} else {
removeErrorMsg(firstName);
}
}
:root {
--font-default: "DM Sans", Arial, Helvetica, sans-serif;
--font-slab: var(--font-default);
--modal-duration: 0.8s;
}
* {
box-sizing: border-box;
margin: 0;
padding: 0;
}
/* Landing Page */
body {
margin: 0;
display: flex;
flex-direction: column;
font-family: var(--font-default);
font-size: 18px;
max-width: 1300px;
margin: 0 auto;
}
p {
margin-bottom: 0;
padding: 0.5vw;
}
img {
padding-right: 1rem;
}
.topnav {
overflow: hidden;
margin: 3.5%;
}
.header-logo {
float: left;
}
.main-navbar {
float: right;
}
.topnav a {
float: left;
display: block;
color: #000000;
text-align: center;
padding: 12px 12px;
margin: 5px;
text-decoration: none;
font-size: 20px;
font-family: Roboto, sans-serif;
}
.topnav a:hover {
background-color: #ff0000;
color: #ffffff;
border-radius: 15px;
}
.topnav a.active {
background-color: #ff0000;
color: #ffffff;
border-radius: 15px;
}
.topnav .icon {
display: none;
}
#media screen and (max-width: 768px) {
.topnav a {display: none;}
.topnav a.icon {
float: right;
display: block;
}
}
#media screen and (max-width: 768px) {
.topnav.responsive {position: relative;}
.topnav.responsive .icon {
position: absolute;
right: 0;
top: 0;
}
.topnav.responsive a {
float: none;
display: block;
text-align: left;
}
}
#media screen and (max-width: 540px) {
.topnav a {display: none;}
.topnav a.icon {
float: right;
display: block;
margin-top: -15px;
}
}
main {
font-size: 130%;
font-weight: bolder;
color: black;
padding-top: 0.5vw;
padding-left: 2vw;
padding-right: 2vw;
margin: 1px 20px 15px;
border-radius: 2rem;
text-align: justify;
}
.modal-btn {
font-size: 145%;
background: #fe142f;
display: flex;
margin: auto;
padding: 2em;
color: #fff;
padding: 0.75rem 2.5rem;
border-radius: 1rem;
cursor: pointer;
}
.modal-btn:hover {
background: #3876ac;
}
.footer {
margin: 20px;
padding: 10px;
font-family: var(--font-slab);
}
/* Modal form */
.button {
background: #fe142f;
margin-top: 0.5em;
padding: 1em;
color: #fff;
border-radius: 15px;
cursor: pointer;
font-size: 16px;
}
.button:hover {
background: #3876ac;
}
.smFont {
font-size: 16px;
}
.bground {
display: none;
position: fixed;
z-index: 1;
left: 0;
top: 0;
height: 100%;
width: 100%;
overflow: auto;
background-color: rgba(26, 39, 156, 0.4);
}
.content {
margin: 5% auto;
width: 100%;
max-width: 500px;
animation-name: modalopen;
animation-duration: var(--modal-duration);
background: #232323;
border-radius: 10px;
overflow: hidden;
position: relative;
color: #fff;
padding-top: 10px;
}
.modal-body {
padding: 15px 8%;
margin: 15px auto;
}
label {
font-family: var(--font-default);
font-size: 17px;
font-weight: normal;
display: inline-block;
margin-bottom: 11px;
}
input {
padding: 8px;
border: 0.8px solid #ccc;
outline: none;
}
.text-control {
margin: 0;
padding: 8px;
width: 100%;
border-radius: 8px;
font-size: 20px;
height: 48px;
}
.formData[data-error]::after {
content: attr(data-error);
font-size: 0.4em;
color: #e54858;
display: block;
margin-top: 7px;
margin-bottom: 7px;
text-align: right;
line-height: 0.3;
opacity: 0;
transition: 0.3s;
}
.formData[data-error-visible="true"]::after {
opacity: 1;
}
.formData[data-error-visible="true"] .text-control {
border: 2px solid #e54858;
}
/*
input[data-error]::after {
content: attr(data-error);
font-size: 0.4em;
color: red;
} */
.checkbox-label,
.checkbox2-label {
position: relative;
margin-left: 36px;
font-size: 12px;
font-weight: normal;
}
.checkbox-label .checkbox-icon,
.checkbox2-label .checkbox-icon {
display: block;
width: 20px;
height: 20px;
border: 2px solid #279e7a;
border-radius: 50%;
text-indent: 29px;
white-space: nowrap;
position: absolute;
left: -30px;
top: -1px;
transition: 0.3s;
}
.checkbox-label .checkbox-icon::after,
.checkbox2-label .checkbox-icon::after {
content: "";
width: 13px;
height: 13px;
background-color: #279e7a;
border-radius: 50%;
text-indent: 29px;
white-space: nowrap;
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
transition: 0.3s;
opacity: 0;
}
.checkbox-input {
display: none;
}
.checkbox-input:checked + .checkbox-label .checkbox-icon::after,
.checkbox-input:checked + .checkbox2-label .checkbox-icon::after {
opacity: 1;
}
.checkbox-input:checked + .checkbox2-label .checkbox-icon {
background: #279e7a;
}
.checkbox2-label .checkbox-icon {
border-radius: 4px;
border: 0;
background: #c4c4c4;
}
.checkbox2-label .checkbox-icon::after {
width: 7px;
height: 4px;
border-radius: 2px;
background: transparent;
border: 2px solid transparent;
border-bottom-color: #fff;
border-left-color: #fff;
transform: rotate(-55deg);
left: 21%;
top: 19%;
}
.close {
position: absolute;
right: 15px;
top: 15px;
width: 32px;
height: 32px;
opacity: 1;
cursor: pointer;
transform: scale(0.7);
}
.close:before,
.close:after {
position: absolute;
left: 15px;
content: " ";
height: 33px;
width: 3px;
background-color: #fff;
}
.close:before {
transform: rotate(45deg);
}
.close:after {
transform: rotate(-45deg);
}
.btn-submit,
.btn-signup {
background: #fe142f;
display: block;
margin: 0 auto;
border-radius: 7px;
font-size: 1rem;
padding: 12px 82px;
color: #fff;
cursor: pointer;
border: 0;
}
/* custom select styles */
.custom-select {
position: relative;
font-family: Arial;
font-size: 1.1rem;
font-weight: normal;
}
.custom-select select {
display: none;
}
.select-selected {
background-color: #fff;
}
/* Style the arrow inside the select element: */
.select-selected:after {
position: absolute;
content: "";
top: 10px;
right: 13px;
width: 11px;
height: 11px;
border: 3px solid transparent;
border-bottom-color: #f00;
border-left-color: #f00;
transform: rotate(-48deg);
border-radius: 5px 0 5px 0;
}
/* Point the arrow upwards when the select box is open (active): */
.select-selected.select-arrow-active:after {
transform: rotate(135deg);
top: 13px;
}
.select-items div,
.select-selected {
color: #000;
padding: 11px 16px;
border: 1px solid transparent;
border-color: transparent transparent rgba(0, 0, 0, 0.1) transparent;
cursor: pointer;
border-radius: 8px;
height: 48px;
}
/* Style items (options): */
.select-items {
position: absolute;
background-color: #fff;
top: 89%;
left: 0;
right: 0;
z-index: 99;
}
/* Hide the items when the select box is closed: */
.select-hide {
display: none;
}
.select-items div:hover,
.same-as-selected {
background-color: rgba(0, 0, 0, 0.1);
}
/* custom select end */
.text-label {
font-weight: normal;
font-size: 16px;
}
.hero-section {
min-height: 93vh;
border-radius: 10px;
display: grid;
grid-template-columns: repeat(12, 1fr);
overflow: hidden;
box-shadow: 0 2px 7px 2px rgba(0, 0, 0, 0.2);
margin-bottom: 10px;
}
.hero-content {
padding: 51px 67px;
grid-column: span 4;
background: #232323;
color: #fff;
position: relative;
text-align: left;
min-width: 424px;
}
.hero-content::after {
content: "";
width: 100%;
height: 100%;
background: #232323;
position: absolute;
right: -80px;
top: 0;
}
.hero-content > * {
position: relative;
z-index: 1;
}
.hero-headline {
font-size: 6rem;
font-weight: normal;
white-space: nowrap;
}
.hero-text {
width: 146%;
font-weight: normal;
margin-top: 57px;
padding: 0;
}
.btn-signup {
outline: none;
text-transform: capitalize;
font-size: 1.3rem;
padding: 15px 23px;
margin: 0;
margin-top: 59px;
}
.hero-img {
grid-column: span 8;
}
.hero-img img {
width: 100%;
height: 100%;
display: block;
padding: 0;
}
.copyrights {
color: #fe142f;
padding: 0;
font-size: 1rem;
margin: 60px 0 30px;
font-weight: bolder;
}
.hero-section > .btn-signup {
display: none;
}
footer {
padding-left: 2vw;
padding-right: 2vw;
margin: 0 20px;
}
#media screen and (max-width: 800px) {
.hero-section {
display: block;
box-shadow: unset;
}
.hero-content {
background: #fff;
color: #000;
padding: 20px;
}
.hero-content::after {
content: unset;
}
.hero-content .btn-signup {
display: none;
}
.hero-headline {
font-size: 4.5rem;
white-space: normal;
}
.hero-text {
width: unset;
font-size: 1.5rem;
}
.hero-img img {
border-radius: 10px;
margin-top: 40px;
}
.hero-section > .btn-signup {
display: block;
margin: 32px auto 10px;
padding: 12px 35px;
}
.copyrights {
margin-top: 50px;
text-align: center;
}
}
#keyframes modalopen {
from {
opacity: 0;
transform: translateY(-150px);
}
to {
opacity: 1;
}
}
<form
id="form"
name="reserve"
action="index.html"
method="get"
>
<div class="formData">
<label for="firstName">Prénom</label><br>
<input
class="text-control"
type="text"
id="firstName"
name="first"
minlength="2"
required
/><br>
</div>
<input
class="btn-submit"
type="submit"
class="button"
value="C'est parti"
/>
</form>

Is there a way to make a script element only activate under specific conditions?

I have a HTML page that works on both desktop and mobile. It has a button that when pressed scrolls to the top of the page. But I only want it to appear when in desktop mode. It's hidden until you scroll down the page, and then becomes clickable.
This is my code:
index.html:
<html>
<head>
<title>Home</title>
<link rel="icon" type="image/x-icon" href="./images/favicon.png">
<link rel="stylesheet" media="screen and (min-width: 1294px)" href="main.css">
<link rel="stylesheet" media="screen and (max-width: 1294px)" href="mobile.css">
<link href="https://fonts.googleapis.com/css?family=Poppins" rel="stylesheet">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<div class="header">
<img src="./images/logo.png" title="Aeron" alt="logo" class="header-logo">
<div class="desktop-nav">
<ul class="desktop-nav-links">
<li>Home</li>
<li>Portfolio</li>
<li>Contact</li>
<li>About Us</li>
<li>Recipes</li>
<li>Progress</li>
<li>PC Setup Designer</li>
<li>Gallery</li>
</ul>
</div>
<div class="mobile-nav">
<span class="menu-button" onclick="openNav()">☰</span>
<div id="mobile-nav-panel" class="mobile-nav-panel">
×
<ul class="mobile-nav-link-list">
<li class="mobile-nav-link">Home</li>
<hr>
<li class="mobile-nav-link">Portfolio</li>
<hr>
<li class="mobile-nav-link">Contact</li>
<hr>
<li class="mobile-nav-link">About Us</li>
<hr>
<li class="mobile-nav-link">Recipes</li>
<hr>
<li class="mobile-nav-link">Progress</li>
<hr>
<li class="mobile-nav-link">PC Setup Designer</li>
<hr>
<li class="mobile-nav-link">Gallery</li>
<hr>
<li class="mobile-nav-link"></li>
</ul>
</div>
</div>
</div>
<h1 class="heading">Welcome to Aeron</h1>
<div style="height:100%"></div>
<footer>
<img src="./images/logo.png" title="Aeron" alt="logo" class="footer-logo">
<p class="copyright">Copyright © 2022 Aeron Corporation</p>
<div class="footer-links">
About Us
<p>|</p>
Policy
<p>|</p>
Contact Us
</div>
</footer>
<button onclick="topFunction()" id="return" title="Return To Top">^</button>
<script>
let mybutton = document.getElementById("return");
window.onscroll = function() {scrollFunction()};
function scrollFunction() {
if (document.body.scrollTop > 20 || document.documentElement.scrollTop > 20) {
mybutton.style.display = "block";
} else {
mybutton.style.display = "none";
}
}
function topFunction() {
document.body.scrollTop = 0;
}
function openNav() {
document.getElementById("mobile-nav-panel").style.width = "100%";
}
function closeNav() {
document.getElementById("mobile-nav-panel").style.width = "0";
}
</script>
</body>
</html>
main.css:
#import url('https://fonts.googleapis.com/css2?family=Poppins:wght#200;300;400;500&display=swap');
* {
box-sizing: border-box;
scroll-behavior: smooth;
font-family: 'Poppins', sans-serif;
}
body {
background: linear-gradient( to right,#ff0000,#0000ff);
margin: 0;
}
p {
color:#ffffff;
font-size:20px;
padding: 10px;
}
.heading {
margin: 20px;
font-size: 50px;
text-align: center;
color: black;
}
a {
text-decoration: none;
}
.favcolorcontainer {
border: 2px solid black;
border-radius: 4px;
width: auto;
padding: 5px;
background: white;
display: inline-flex;
}
.colorpicker {
border:none;
background: white;
display: inline-flex;
}
.favcolor {
font-family: verdana;
margin-top: 3px;
}
.slideshow-container {
display: block;
width: 80%;
position: relative;
margin: 10px;
margin-left: auto;
margin-right: auto;
}
.mySlides {
display: none;
}
.prev, .next {
cursor: pointer;
position: absolute;
top: 50%;
width: auto;
margin-top: -22px;
padding: 16px;
color: white;
font-weight: bold;
font-size: 18px;
transition: 0.6s ease;
border-radius: 0 3px 3px 0;
user-select: none;
}
.next {
right: 0;
border-radius: 3px 0 0 3px;
}
.prev:hover, .next:hover {
background-color: #a6a6a650;
}
.slide-name {
color: #f2f2f2;
font-size: 15px;
padding: 8px 12px;
position: absolute;
bottom: 8px;
width: 100%;
text-align: center;
}
.slide-number {
color: #f2f2f2;
font-size: 12px;
padding: 8px 12px;
position: absolute;
top: 0;
}
.fade {
animation-name: fade;
animation-duration: 1.5s;
}
#keyframes fade {
from {opacity: .4}
to {opacity: 1}
}
.progress-bar {
width: 100%;
border: none;
border-radius: 100px;
background-color: #FFFFFF;
padding: 3px;
}
.progress-tag {
color: #DDDDDD;
margin-left: 10px;
}
.fill-html {
width: 75%;
background-color: #FA3200;
border-radius: 100px;
}
.fill-css {
width: 60%;
background-color: #0000C8;
border-radius: 100px;
}
.fill-js {
width: 10%;
background-color: #C80000;
border-radius: 100px;
}
.fill-php {
width: 3%;
background-color: #00C832;
border-radius: 100px;
}
.fill-rwpd {
width: 100%;
background-color: #450099;
border-radius: 100px;
}
#return {
display: none;
position: fixed;
bottom: 30px;
right: 35px;
z-index: 99;
border: none;
outline: none;
background-color: #0000d1;
color: white;
cursor: pointer;
border-radius: 100px;
font-size: 45px;
width: 60px;
height: 60px;
}
#return:hover {
background-color: #0101bb;
}
.progress-container {
padding: 10px;
}
.header-logo {
margin: 10px;
float: left;
width: 150px;
}
.header {
background-color: #303030;
overflow: hidden;
width: 100%;
}
.desktop-nav-links {
float: right;
margin-right: 20px;
}
.desktop-nav-links a {
margin: 20px 25px 0;
padding: 0 0 20px;
display: block;
color: white;
}
.desktop-nav-links a:hover {
color: #b4b4b4;
transition: 0.2s all ease;
}
.desktop-nav-links li {
float: left;
list-style: none;
}
.menu-button {
display: none;
}
.copyright {
color: #b4b4b4;
font-size: 15px;
}
footer {
background: #303030;
padding: 25px 0;
text-align: center;
bottom: 0;
width: 100%;
height: auto;
display: block;
}
.hyperlink {
display: inline-block;
position: relative;
color: #b4b4b4;
}
.hyperlink:after {
content: '';
position: absolute;
width: 100%;
transform: scaleX(0);
height: 2px;
bottom: 15px;
left: 0;
background-color: #b4b4b4;
transform-origin: bottom right;
transition: transform 0.25s ease-out;
}
.hyperlink:hover:after {
transform: scaleX(1);
transform-origin: bottom left;
}
.sidenav {
height: 100%;
width: 0;
position: fixed;
z-index: 1;
top: 0;
right: 0;
background-color: #111111;
overflow-x: hidden;
transition: 0.5s;
padding-top: 60px;
}
.sidenav .closebtn {
position: absolute;
top: 0;
right: 25px;
font-size: 35px;
margin-left: 50px;
}
.recipe-container {
margin: 0px;
padding: 10px;
display: grid;
grid-template-columns: auto auto auto;
justify-content: center;
}
.recipe-window {
margin: 10px;
padding: 10px;
border: 1px solid #ffffff;
background-color: #ffffff;
word-break: break-word;
width: min-content;
border-radius: 10px;
}
.recipe-title {
color: black;
margin-top: 5px;
padding: 0px;
font-size: 25px;
}
:root {
color-scheme: dark;
}
.footer-links {
display: flex;
justify-content: center;
align-items: center;
}
.footer-links p {
margin: 0;
}
.footer-links a {
color: #ffffff;
}
.footer-links a:hover {
color: #b4b4b4;
}
.about {
text-align: center;
padding: 0 300px;
}
.mobile-nav {
display: none;
}
.footer-logo {
width: 150px;
}
mobile.css:
#import url('https://fonts.googleapis.com/css2?family=Poppins:wght#200;300;400;500&display=swap');
* {
box-sizing: border-box;
scroll-behavior: smooth;
font-family: 'Poppins', sans-serif;
}
body {
background: linear-gradient( to right,#ff0000,#0000ff);
margin: 0;
}
p {
color:#ffffff;
font-size:20px;
padding: 10px;
}
.heading {
margin: 20px;
font-size: 30px;
text-align: center;
color: black;
}
a {
text-decoration: none;
}
.slideshow-container {
display: block;
width: 80%;
position: relative;
margin: 10px;
margin-left: auto;
margin-right: auto;
}
.mySlides {
display: none;
}
.prev, .next {
cursor: pointer;
position: absolute;
top: 50%;
width: auto;
margin-top: -22px;
padding: 16px;
color: white;
font-weight: bold;
font-size: 18px;
transition: 0.6s ease;
border-radius: 0 3px 3px 0;
user-select: none;
}
.next {
right: 0;
border-radius: 3px 0 0 3px;
}
.prev:hover, .next:hover {
background-color: #a6a6a650;
}
.slide-name {
color: #f2f2f2;
font-size: 15px;
padding: 8px 12px;
position: absolute;
bottom: 8px;
width: 100%;
text-align: center;
}
.slide-number {
color: #f2f2f2;
font-size: 12px;
padding: 8px 12px;
position: absolute;
top: 0;
}
.fade {
animation-name: fade;
animation-duration: 1.5s;
}
#keyframes fade {
from {opacity: .4}
to {opacity: 1}
}
.progress-bar {
width: 100%;
border: none;
border-radius: 100px;
background-color: #FFFFFF;
padding: 3px;
}
.progress-tag {
color: #DDDDDD;
margin-left: 10px;
}
.fill-html {
width: 75%;
background-color: #FA3200;
border-radius: 100px;
}
.fill-css {
width: 60%;
background-color: #0000C8;
border-radius: 100px;
}
.fill-js {
width: 10%;
background-color: #C80000;
border-radius: 100px;
}
.fill-php {
width: 3%;
background-color: #00C832;
border-radius: 100px;
}
.fill-rwpd {
width: 100%;
background-color: #450099;
border-radius: 100px;
}
#return {
display: none;
position: fixed;
bottom: 30px;
right: 35px;
z-index: 99;
border: none;
outline: none;
background-color: #0000d1;
color: white;
cursor: pointer;
border-radius: 100px;
font-size: 45px;
width: 60px;
height: 60px;
}
#return:hover {
background-color: #0101bb;
}
.progress-container {
padding: 10px;
}
.header-logo {
margin: 10px;
float: left;
width: 150px;
}
.header {
background-color: #303030;
overflow: hidden;
width: 100%;
}
.desktop-nav {
display: none;
}
.menu-button {
display: block;
margin: 30px 15px;
font-size:25px;
cursor:pointer;
color:white;
float: right;
}
.copyright {
color: #b4b4b4;
font-size: 15px;
}
footer {
background: #303030;
padding: 25px 0;
text-align: center;
bottom: 0;
width: 100%;
height: auto;
display: block;
}
.hyperlink {
display: inline-block;
position: relative;
color: #b4b4b4;
}
.hyperlink:after {
content: '';
position: absolute;
width: 100%;
transform: scaleX(0);
height: 2px;
bottom: 15px;
left: 0;
background-color: #b4b4b4;
transform-origin: bottom right;
transition: transform 0.25s ease-out;
}
.hyperlink:hover:after {
transform: scaleX(1);
transform-origin: bottom left;
}
.recipe-container {
margin: 0px;
padding: 10px;
display: grid;
grid-template-columns: auto auto auto;
justify-content: center;
}
.recipe-window {
margin: 10px;
padding: 10px;
border: 1px solid #ffffff;
background-color: #ffffff;
word-break: break-word;
width: min-content;
border-radius: 10px;
}
.recipe-title {
color: black;
margin-top: 5px;
padding: 0px;
font-size: 25px;
}
:root {
color-scheme: dark;
}
.footer-links {
display: flex;
justify-content: center;
align-items: center;
font-size: 15px;
}
.footer-links p {
margin: 0;
}
.footer-links a {
color: #ffffff;
}
.footer-links a:hover {
color: #b4b4b4;
}
.about {
text-align: center;
padding: 0 300px;
}
.mobile-nav {
float: right;
margin-right: 20px;
}
.mobile-nav-panel {
height: 100%;
width: 0;
position: fixed;
z-index: 1;
top: 0;
right: 0;
background-color: #111111;
overflow-x: hidden;
transition: 0.5s;
padding-top: 60px;
}
.mobile-nav a {
margin: 20px 0 0 0;
padding: 0 0 20px;
color: white;
font-size: 20px;
}
.mobile-nav-panel .closebtn {
position: absolute;
top: 0px;
right: 25px;
font-size: 50px;
}
.mobile-nav-link-list {
margin-right: 25px;
padding-top: 50px;
font-size: 1px;
list-style: none;
text-align: right;
}
.mobile-nav-link {
padding: 25px 0;
font-size: 1px;
}
.footer-logo {
width: 125px;
}
This is the result (bottom-right corner):
Is there any way to do this?
Thanks

Add this to mobile.css and the button will be gone, visually.
#return {
opacity: 0;
pointer-events: none;
}
Otherwise you would have to compare against window.width to get the equivalent of media query (or actually viewport width, see this answer)
Another option, if you're using bootstrap is to check against visibility of the "width" classes. see this answer.

How can I get a styled form to be submitted?

So I'm trying to submit an HTML forms but I can't get it to work. I've tried removing some styling to different divs, and also I've tried removing javascirpt files but nothing seems to be the problem. I already checked about 10 posts here on Stackoverflow but none of them could help me. I would really appreciate if someone could help me.
//Nearby Search Overlay
var state_overlay1 = true;
function nearby_search_toggle() {
if (state_overlay1) {
state_overlay1 = false;
document.getElementById("nearby_search").style.height = "100%";
} else {
state_overlay1 = true;
document.getElementById("nearby_search").style.height = "0%";
}
}
//Search Nearby Query
var nearby_query = "¿a dónde quieres ir?";
function update_query(choice) {
document.getElementById("nearby_query_text").innerHTML = choice;
document.getElementById("adqi_button").style.backgroundColor = "#A288E3";
nearby_search_toggle();
}
//Add Address Overlay
var state_overlay2 = true;
function add_address_toggle() {
if (state_overlay2) {
state_overlay2 = false;
document.getElementById("adqi_button").style.zIndex = "0";
document.getElementById("add_address").style.height = "100%";
} else {
state_overlay2 = true;
document.getElementById("adqi_button").style.zIndex = "2";
document.getElementById("add_address").style.height = "0%";
}
}
function add_address(){
}
#font-face {
font-family: biolinum;
src: 'fonts/LinBiolinum_R.ttf';
}
#font-face {
font-family: biolinum;
src: 'fonts/LinBiolinum_RB.ttf';
font-weight: bold;
}
#font-face {
font-family: biolinum;
src: 'fonts/LinBiolinum_RI.ttf';
font-style: italic;
}
body {
background-color: #FCF7F8;
font-size: 62.5%;
height: 100%;
margin: 0px;
}
p {
margin-block-start: 0rem;
margin-block-end: 0rem;
}
h1 {
margin-block-start: 0rem;
margin-block-end: 0rem;
}
.domainhome {
font-family: biolinum;
font-size: 2rem;
text-align: center;
color: #1D263B;
background-color: #FCF7F8;
border: none;
padding-top: 0px;
cursor: pointer;
outline:none;
margin-top: 2rem;
margin-left: 5rem;
}
a:link {
color: #1D263B;
background-color: transparent;
text-decoration: none;
}
a:visited {
color: #1D263B;
background-color: transparent;
text-decoration: none;
}
.flex-container {
display: flex;
flex-shrink: 0;
margin-top: 4rem;
}
.left-bar {
flex-direction: column;
margin-left: 5rem;
}
.right-bar {
flex-direction: column;
margin-left: 5rem;
margin-right: 5rem;
height: 100%;
width: 100%;
}
button {
transition: 0.4s;
}
button:hover {
transform: rotate(-1deg) translate(0px, -8px);
}
.adondequieresir {
font-family: biolinum;
font-size: 1.66rem;
text-align: center;
color: #FCF7F8;
background-color: #1D263B;
border: none;
width: 275px;
height: 75px;
cursor: pointer;
outline:none;
margin-bottom: 3rem;
z-index: 2;
position: relative;
}
.agregarubicacion {
font-family: biolinum;
font-size: 1.33rem;
text-align: center;
color: #FCF7F8;
background-color: #1D263B;
border: none;
width: 275px;
height: 50px;
border-radius: 50px;
cursor: pointer;
outline:none;
margin-bottom: 3rem;
}
.personasunidas {
font-family: biolinum;
font-size: 1.33rem;
text-align: center;
color: #FCF7F8;
background-color: #1D263B;
border: none;
width: 275px;
height: 50px;
border-radius: 50px;
cursor: pointer;
outline:none;
margin-bottom: 3rem;
}
.icons {
float: left;
margin-left: 7px;
margin-right: 10px;
}
#map {
height: 400px;
}
#nearby_search {
transition: 0.4s;
position: fixed;
width: 100%;
height: 0%;
top: 0;
left: 0;
right: 0;
bottom: 0;
background-color: rgba(0,0,0,0.5);
z-index: 1;
overflow-y: scroll;
transition: 0.4s;
backdrop-filter: blur(6px);
-ms-overflow-style: none; /* IE and Edge */
scrollbar-width: none; /* Firefox */
}
#nearby_search::-webkit-scrollbar {
display: none;
}
.adqi_dropdown {
margin-top: 134px;
margin-left: 25rem;
display: flex;
flex-shrink: 0;
flex-direction: column;
}
#add_address {
transition: 0.4s;
position: fixed;
width: 100%;
height: 0%;
top: 0;
left: 0;
right: 0;
bottom: 0;
background-color: rgba(0,0,0,0.5);
z-index: 1;
overflow-y: scroll;
transition: 0.4s;
backdrop-filter: blur(6px);
-ms-overflow-style: none; /* IE and Edge */
scrollbar-width: none; /* Firefox */
}
#add_address::-webkit-scrollbar {
display: none;
}
.square_popup {
position: fixed;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
height: 200px;
width: 500px;
display: flex;
flex-shrink: 0;
flex-direction: column;
background-color: #1D263B;
font-family: biolinum;
font-size: 1.33rem;
color: #FCF7F8;
justify-content: space-evenly;
border-radius: 50px;
}
#cancelar_button {
height: 50px;
width: 25%;
border-radius: 50px;
font-family: biolinum;
font-size: 1.33rem;
color: #FCF7F8;
background-color: #F7B32B;
border: none;
border-radius: 50px;
cursor: pointer;
outline:none;
}
#submit_button {
height: 50px;
width: 55%;
border-radius: 50px;
font-family: biolinum;
font-size: 1.33rem;
color: #FCF7F8;
background-color: #7CD97C;
border: none;
border-radius: 50px;
cursor: pointer;
outline:none;
}
.common_flexbox {
display: flex;
flex-shrink: 0;
justify-content: space-around;
}
#nickname {
position: relative;
margin-left: auto;
margin-right: auto;
border-radius: 50px;
width: 90%;
height: 50px;
font-family: biolinum;
font-size: 1.33rem;
border: none;
background-color: #FCF7F8;
color: #1D263B;
text-align: center;
transition: 0.4s;
}
#nickname:hover {
transform: rotate(-1deg) translate(0px, -8px);
}
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<button class="domainhome"><p>salgamos.com.mx</p></button>
<div class="flex-container">
<div class="left-bar">
<div>
<button onClick="nearby_search_toggle()" class="adondequieresir" id="adqi_button"><p id="nearby_query_text">¿a dónde quieres ir?</p></button>
</div>
<div id="nearby_search">
<div class="adqi_dropdown">
<button class="adondequieresir" onClick="update_query('restaurante')"><p>restaurante</p></button>
<button class="adondequieresir" onClick="update_query('café')"><p>café</p></button>
<button class="adondequieresir" onClick="update_query('bar')"><p>bar</p></button>
<button class="adondequieresir" onClick="update_query('parque')"><p>parque</p></button>
<button class="adondequieresir" onClick="update_query('antro')"><p>antro</p></button>
</div>
</div>
<div>
<button class="agregarubicacion" onClick="add_address_toggle()" id="au_button">
<img class="icons" src="{{url_for('static', filename='icons/noun_pin_button.svg')}}" width="30px" height="30px"/>
<p style="float: left;">¡agrega tu ubicación!</p>
</button>
</div>
<div id="add_address">
<form action="#" onsubmit="add_address();return false" name="get_nickname" method="POST">
<div class="square_popup">
<input type="text" name="nickname" placeholder="¿cuál es tu apodo?" id="nickname" />
<div class="common_flexbox">
<button onClick="add_address_toggle()" id="cancelar_button"><p>Cancelar</p></button>
<button type="submit" id="submit_button" value="Submit"><p>Agregar ubicación</p></button>
</div>
</div>
</form>
</div>
<div>
<button class="personasunidas">
<img class="icons" src="{{url_for('static', filename='icons/noun_user.svg')}}" width="30px" height="30px"/>
<p style="float: left;">(n) personas unidas</p>
</button>
</div>
</div>
</div>
</body>
</html>

When to click form input the background is changing weirdly and after clicking page is not loading correctly on the phone

When I click the input the page is going crazy on the phone. There is not problem on the desktop. I believe the problem is because of the CSS but couldn't figure it out. I am a beginner designer and I am working on responsive web designers. When I click the input the background changes and page is not loading correctly.
This is the HTML of the site
body {
font-family: 'Playfair Display', serif;
position: relative;
background-image: url("pop-zebra-4q3Ogm3Kt44-unsplash.jpg");
background-repeat: no-repeat;
background-position: center;
background-size: cover;
height: 100vh;
}
body::after {
content: "";
position: absolute;
width: 100%;
height: 100%;
left: 0;
top: 0;
z-index: -1;
background-color: rgba(0, 0, 0, 0.8)
}
#all {
position: absolute;
right: 50%;
bottom: 50%;
transform: translate(50%, 50%);
padding: 3rem;
z-index: 1;
color: #fff;
}
.showcase-top {
text-align: center;
margin-right: 2rem;
}
.showcase-top h1 {
font-size: 3rem;
font-weight: 900;
margin-bottom: 0.8rem;
}
.showcase-top p {
font-size: 1.1rem;
letter-spacing: 5px
}
#second {
margin-top: 0.2rem
}
.tabs {
display: flex;
text-align: center;
padding: 2rem;
}
.tab {
width: 100px;
height: 100px;
text-align: center;
border: 1px solid rgba(166, 151, 7, 0.8);
border-radius: 50%;
margin-right: 2rem;
}
.tabs .tab h1 {
margin-top: 0.9rem;
}
.form {
padding: 0.5rem 5rem;
text-align: center;
margin-right: 2.5rem;
width: 90%;
max-width: 900px;
padding: 10px 50px;
margin-left: 0.6rem;
}
.form input {
width: 70%;
padding: 0.8rem;
border: none;
border-radius: 1.5rem;
margin-right: 0.5rem;
outline: none;
}
.form button {
width: 25%;
padding: 0.8rem;
border-radius: 1.5rem;
border: none;
background-color: #a69802;
color: #edece1;
cursor: pointer;
outline: none;
}
.footer {
color: rgba(255, 255, 255, 0.6);
width: 100%;
font-size: 6px;
position: absolute;
bottom: 10%;
left: 50%;
transform: translate(-10%, 51%);
letter-spacing: 1px
}
#media screen and (max-width:768px) {
.tabs {
flex-direction: column;
width: 100%;
align-items: center;
justify-content: center;
margin-left: 0.6rem;
}
.tab {
margin-bottom: 1rem;
height: 90px;
width: 90px;
}
.form {
display: inline-block;
margin-right: 1rem;
margin-left: 1rem;
margin-top: -3rem;
width: 100%;
}
.form button {
width: 100px;
}
.showcase-top {
width: 500px;
margin-left: 1rem;
}
.showcase-top h1 {
font-size: 2rem;
}
.showcase-top p {
font-size: 1rem;
letter-spacing: 3px;
}
}
#media screen and (min-width:320px) and (max-width:480px) {
.form {
display: flex;
flex-direction: column;
align-items: center;
margin: auto;
}
.form input {
width: 65%;
}
.form button {
width: 40%;
margin-top: 1rem;
}
.showcase-top p {
font-size: 0.7rem
}
.tabs {
padding: 0;
padding-top: 1.2rem
}
.tab {
height: 90px;
width: 90px;
}
.footer {
bottom: 15%;
left: 23%
}
}
<body>
<showcase id="all">
<div class="showcase-top">
<h1>Coming Soon</h1>
<p>My website is under construction</p>
<p id="second">Follow us now!</p>
</div>
<section class="tabs">
<div class="tab">
<h1 id="day">na</h1>
<p>Days</p>
</div>
<div class="tab">
<h1 id="hour">na</h1>
<p>Hours</p>
</div>
<div class="tab">
<h1 id="min">na</h1>
<p>Minutes</p>
</div>
<div class="tab">
<h1 id="sec">na</h1>
<p>Seconds</p>
</div>
</section>
<form class="form">
<input type="email" placeholder="Enter Email...">
<button type="submit">Subscribe</button>
</form>
</showcase>
<footer class="footer">
<h1>Designed by Cag | Copyright © 2021</h1>
</footer>

Why Does My slideToggle Have A Strange Jump Glitch?

I created a slideToggle menu that for some reason seems to jump around when it slides up and down. The border bottom of the sliding header just flies around and glitches when the menu slides up and down, but otherwise the slideToggle works fine.
I've tried setting the position of the .headermenu to relative as well as hiding the overflow, but neither of these seemed to have fixed the issue. Does slide toggle just not work properly with a border bottom or is the issue in my code?
The glitch is difficult to explain, but the glitch shows in my code snippet, so I suggest you view it to get an understanding of what's happening. Basically the border bottom is bouncing around when the menu slides down.
In order to activate the drop down header you have to click the little broken image in the corner, which will activate the menu (so you can see the glitch in action.)
Is it related to some sort of start height for the animation? Do I need the animation to start at a specific point in the page or is it something else entirely?
$(document).ready(function(){
$("button").click(function(){
$(".headermenu").slideToggle();
$(".headermenu").height('150')
});
});
* {
box-sizing: border-box;
}
#font-face {
font-family: 'monaco';
src: url('monaco-webfont.woff2') format('woff2'),
url('monaco-webfont.woff') format('woff');
font-weight: normal;
font-style: normal;
}
a {
font-family: 'monaco';
font-size: 16px;
text-decoration: none;
}
a:hover {
text-decoration: underline;
}
a:visited {
color: blue;
}
body {
margin: 0px;
}
button {
background: none;
border: none;
float: right;
margin-right: 40px;
margin-top: 15px;
padding: 0px;
}
#hamburger {
padding-top: 2px;
width: 27px;
}
header {
background-color: blue;
border-bottom: solid white 1px;
color: white;
float: left;
height: 60px;
padding-top: 4px;
position: fixed;
width: 100%;
z-index: 150px;
}
.headermenu {
background-color: blue;
border-bottom: solid white 1px;
color: white;
display: none;
font-family: 'monaco';
height: 200px;
overflow: hidden;
padding-top: 40px;
position: relative;
width: 100%;
/*-webkit-transition: all .5s;
transition: all .5s;
height: 0;*/
}
.headermenu a {
color: white;
float: right;
padding-right: 40px;
text-decoration: none;
}
.headermenu a:hover {
text-decoration: underline;
}
.headermenu a:visited {
color: white;
}
#headermenuleft {
float: right;
line-height: 25px;
text-align: left;
}
#headermenuleft ul {
list-style-type: none;
}
#headermenuright {
float: right;
line-height: 25px;
text-align: left;
}
#headermenuright ul {
list-style-type: none;
}
<!DOCTYPE HTML>
<html>
<head>
<link href="css/main.css" rel="stylesheet"/>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.0.2/jquery.min.js"></script>
<script src="js/main.js"></script>
<title>Why Have There Been No Great Women Artists?</title>
</head>
<body>
<header>
<button><img id="hamburger" src="images/Menu,_Web_Fundamentals_(White).svg.png"></button>
<a id="home" href="index.html">Why Have There Been No Great Women Artists?</a>
<div class="headermenu">
<div id="headermenuleft">
<ul>
<li>Georgia O'Keeffe</li>
<li>Frida Kahlo</li>
<li>Artemisia Gentileschi</li>
</ul>
</div>
<div id="headermenuright">
<ul>
<li>The Essay</li>
<li>Judy Chicago</li>
<li>Kara Walker</li>
<li>Ana Mendieta</li>
</ul>
</div>
</div>
</header>
</body>
</html>

$(document).ready(function () {
$("button").click(function () {
$(".headermenu").slideToggle('slow', function () {
$(this).height('150');
});
});
});
* {
box-sizing: border-box;
}
#font-face {
font-family: 'monaco';
src: url('monaco-webfont.woff2') format('woff2'),
url('monaco-webfont.woff') format('woff');
font-weight: normal;
font-style: normal;
}
a {
font-family: 'monaco';
font-size: 16px;
text-decoration: none;
}
a:hover {
text-decoration: underline;
}
a:visited {
color: blue;
}
body {
margin: 0px;
}
button {
background: none;
border: none;
float: right;
margin-right: 40px;
margin-top: 15px;
padding: 0px;
}
#essay {
background-color: white;
height: 400px;
padding-top: 60px;
width: 100%;
}
#essaytext {
width: 830px;
margin: auto;
padding-top: 30px;
}
#gallery {
background-color: blue;
height: 1000px;
width: 100%;
}
#gallery a{
color: white;
}
#gallery h2 {
color: white;
font-size: 28px;
}
#gallerytext {
margin: auto;
padding-bottom: 50px;
padding-top: 50px;
width: 830px;
}
#grid {
margin: auto;
padding-top: 30px;
width: 830px;
}
#gridone {
background-color: white;
color: blue;
display: block;
float: left;
height: 200px;
padding-top: 20px;
padding-left: 25px;
width: 400px;
}
#gridtwo {
background-color: white;
color: blue;
display: block;
float: right;
height: 200px;
padding-top: 20px;
padding-left: 25px;
width: 400px;
}
#gridthree {
background-color: white;
color: blue;
display: block;
float: left;
height: 200px;
margin-top: 30px;
padding-top: 20px;
padding-left: 25px;
width: 400px;
}
#gridfour {
background-color: white;
color: blue;
display: block;
float: right;
height: 200px;
margin-top: 30px;
padding-top: 20px;
padding-left: 25px;
width: 400px;
}
#gridfive {
background-color: white;
color: blue;
display: block;
float: right;
height: 200px;
margin-top: 30px;
padding-top: 20px;
padding-left: 25px;
width: 400px;
}
#gridsix {
background-color: white;
color: blue;
display: block;
float: left;
height: 200px;
margin-top: 30px;
padding-top: 20px;
padding-left: 25px;
width: 400px;
}
#hamburger {
padding-top: 2px;
width: 27px;
}
header {
background-color: blue;
border-bottom: solid white 1px;
color: white;
float: left;
padding-top: 4px;
position: fixed;
width: 100%;
z-index: 150;
}
header > div:first-child
{
height: 60px;
}
.headermenu {
background-color: blue;
border-bottom: solid white 1px;
color: white;
display: none;
font-family: 'monaco';
height: 200px;
overflow: hidden;
padding-top: 40px;
position: relative;
width: 100%;
/*-webkit-transition: all .5s;
transition: all .5s;
height: 0;*/
}
.headermenu a {
color: white;
float: right;
padding-right: 40px;
text-decoration: none;
}
.headermenu a:hover {
text-decoration: underline;
}
.headermenu a:visited {
color: white;
}
#headermenuleft {
float: right;
line-height: 25px;
text-align: left;
}
#headermenuleft ul {
list-style-type: none;
}
#headermenuright {
float: right;
line-height: 25px;
text-align: left;
}
#headermenuright ul {
list-style-type: none;
}
#home {
color: white;
display: block;
font-family: 'monaco';
font-size: 16px;
padding-left: 40px;
padding-right: 0px;
padding-top: 17px;
margin: auto;
}
h2 {
color: blue;
font-family: 'monaco';
font-size: 28px;
font-weight: normal;
}
nav#mobile-nav {
display: none;
z-index: 100;
width: 100%;
}
p {
font-family: 'monaco';
font-size: 16px;
line-height: 21px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<header>
<div>
<button><img id="hamburger" src="https://upload.wikimedia.org/wikipedia/commons/thumb/d/d9/Menu,_Web_Fundamentals.svg/2000px-Menu,_Web_Fundamentals.svg.png"></button>
<a id="home" href="index.html">Why Have There Been No Great Women Artists?</a>
</div>
<div class="headermenu">
<div id="headermenuleft">
<ul>
<li>Georgia O'Keeffe</li>
<li>Frida Kahlo</li>
<li>Artemisia Gentileschi</li>
</ul>
</div>
<div id="headermenuright">
<ul>
<li>The Essay</li>
<li>Judy Chicago</li>
<li>Kara Walker</li>
<li>Ana Mendieta</li>
</ul>
</div>
</div>
</header>
<div id="essay">
<div id="essaytext">
<h2>The Essay</h2>
<p>“Why Have There Been No Great Women Artists?” is an essay by Linda Nochlin that details how centuries of oppression and misogyny has led to a male dominated art world. Nochlin explains through her essay how sexism has prevented women from fully being recognized as historically significant artists.</p>
Read The Essay →
</div>
</div>
<div id="gallery">
<div id="gallerytext">
<h2>The Gallery</h2>
<p>This website is intended to shed a light on the many incredible women in art who have been overshadowed due to their gender. By viewing the gallery you can see the incredible works of women artists whose significant contributions to the art world have been cast aside because of their womanhood.</p>
<div id="grid">
<a href="./judy.html">
<div id="gridone">
"The Dinner Party"<br>
Judy Chicago
</div>
</a>
<a href="./kara.html">
<div id="gridtwo">
"A Subtlety"<br>
Kara Walker
</div>
</a>
<a href="./mendieta.html">
<div id="gridthree">
"Alma Silueta en Fuego"<br>
Ana Mendieta
</div>
</a>
<a href="./georgia.html">
<div id="gridfour">
"Black Iris"<br>
Georgia O'Keeffe
</div>
</a>
<a href="./frida.html">
<div id="gridfive">
"The Two Fridas"<br>
Frida Kahlo
</div>
</a>
<a href="./artemesia.html">
<div id="gridsix">
"Judith Slaying Holofernes"<br>
Artemisia Gentileschi
</div>
</a>
</div>
</div>
</div>

The problem is you have a white bottom border in .headermenu. If you remove that that fixes the problem.
There are other issues however, you are using pixels in the z-index, when that parameter only accepts a number.
Also, it doesn't look to me like you need $(".headermenu").height('150');. If you do, then it should be $(".headermenu").height(150); - without the quote around the number of pixels.
EDIT
It appears you need to add top: 6px; to .headermenu (at least to look correct to me in Firefox). I can't tell you why exactly, but it appears to be to do with the hamburger button being floated and not taking up enough vertical height (padding/margin).
$(document).ready(function(){
$("button").click(function(){
$(".headermenu").slideToggle();
});
});
* {
box-sizing: border-box;
}
#font-face {
font-family: 'monaco';
src: url('monaco-webfont.woff2') format('woff2'),
url('monaco-webfont.woff') format('woff');
font-weight: normal;
font-style: normal;
}
a {
font-family: 'monaco';
font-size: 16px;
text-decoration: none;
}
a:hover {
text-decoration: underline;
}
a:visited {
color: blue;
}
body {
margin: 0px;
}
button {
background: none;
border: none;
float: right;
margin-right: 40px;
margin-top: 15px;
padding: 0px;
}
#essay {
background-color: white;
height: 400px;
padding-top: 60px;
width: 100%;
}
#essaytext {
width: 830px;
margin: auto;
padding-top: 30px;
}
#gallery {
background-color: blue;
height: 1000px;
width: 100%;
}
#gallery a{
color: white;
}
#gallery h2 {
color: white;
font-size: 28px;
}
#gallerytext {
margin: auto;
padding-bottom: 50px;
padding-top: 50px;
width: 830px;
}
#grid {
margin: auto;
padding-top: 30px;
width: 830px;
}
#gridone {
background-color: white;
color: blue;
display: block;
float: left;
height: 200px;
padding-top: 20px;
padding-left: 25px;
width: 400px;
}
#gridtwo {
background-color: white;
color: blue;
display: block;
float: right;
height: 200px;
padding-top: 20px;
padding-left: 25px;
width: 400px;
}
#gridthree {
background-color: white;
color: blue;
display: block;
float: left;
height: 200px;
margin-top: 30px;
padding-top: 20px;
padding-left: 25px;
width: 400px;
}
#gridfour {
background-color: white;
color: blue;
display: block;
float: right;
height: 200px;
margin-top: 30px;
padding-top: 20px;
padding-left: 25px;
width: 400px;
}
#gridfive {
background-color: white;
color: blue;
display: block;
float: right;
height: 200px;
margin-top: 30px;
padding-top: 20px;
padding-left: 25px;
width: 400px;
}
#gridsix {
background-color: white;
color: blue;
display: block;
float: left;
height: 200px;
margin-top: 30px;
padding-top: 20px;
padding-left: 25px;
width: 400px;
}
#hamburger {
padding-top: 2px;
width: 27px;
}
header {
background-color: blue;
border-bottom: solid red 1px;
color: white;
float: left;
height: 60px;
padding-top: 4px;
position: fixed;
width: 100%;
z-index: 150;
}
.headermenu {
background-color: green;
border-bottom: solid red 1px;
color: white;
display: none;
font-family: 'monaco';
height: 200px;
overflow: hidden;
padding-top: 60px;
position: relative;
width: 100%;
top: 6px;
/*-webkit-transition: all .5s;
transition: all .5s;
height: 0;*/
z-index: 200;
}
.headermenu a {
color: white;
float: right;
padding-right: 40px;
text-decoration: none;
}
.headermenu a:hover {
text-decoration: underline;
}
.headermenu a:visited {
color: white;
}
#headermenuleft {
float: right;
line-height: 25px;
text-align: left;
}
#headermenuleft ul {
list-style-type: none;
}
#headermenuright {
float: right;
line-height: 25px;
text-align: left;
}
#headermenuright ul {
list-style-type: none;
}
#home {
color: white;
display: block;
font-family: 'monaco';
font-size: 16px;
padding-left: 40px;
padding-right: 0px;
padding-top: 17px;
margin: auto;
}
h2 {
color: blue;
font-family: 'monaco';
font-size: 28px;
font-weight: normal;
}
nav#mobile-nav {
display: none;
z-index: 100;
width: 100%;
}
p {
font-family: 'monaco';
font-size: 16px;
line-height: 21px;
}
<!DOCTYPE HTML>
<html>
<head>
<link href="css/main.css" rel="stylesheet"/>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/2.0.2/jquery.min.js"></script>
<script src="js/main.js"></script>
<title>Why Have There Been No Great Women Artists?</title>
</head>
<body>
<header>
<button><img id="hamburger" src="images/Menu,_Web_Fundamentals_(White).svg.png"></button>
<a id="home" href="index.html">Why Have There Been No Great Women Artists?</a>
<div class="headermenu">
<div id="headermenuleft">
<ul>
<li>Georgia O'Keeffe</li>
<li>Frida Kahlo</li>
<li>Artemisia Gentileschi</li>
</ul>
</div>
<div id="headermenuright">
<ul>
<li>The Essay</li>
<li>Judy Chicago</li>
<li>Kara Walker</li>
<li>Ana Mendieta</li>
</ul>
</div>
</div>
</header>
</body>
</html>