Develop Reference

How to achieve a card slide in animation?

Please take a look at the following basic example:
html,
body {
height: 100%;
}
body {
margin: 0;
}
.sidebar {
height: 100%;
width: 300px;
background-color: pink;
float: left;
}
.students-list {
height: 100%;
width: 200px;
background-color: skyblue;
float: left;
}
<div class="sidebar">
Students List
</div>
<div class="students-list">
</div>
The pink div is a sidebar with a link. at first the second div which is the skyblue one, should be hidden, and when the user clicks on the link the whole div should slide smoothly from the left (From underneath the pink div).
Do any of you have a tip or can help me out how to achieve the animation?
EDIT: Is it possible to also use another button to slide out even a third div to the right of the second div?

Please check the below code
body {
font-family: "Roboto", sans-serif;
font-size: 18px;
overflow-x: hidden;
}
main {
padding: 40px 25px;
transition: .5s ease-in-out;
width: 100%;
}
nav {
background: #36a;
bottom: 0;
box-shadow: 0 0 5px #666;
height: 100%;
left: -17.5rem;
padding-top: 38px;
position: absolute;
top: 0;
transition: .5s ease-in-out;
width: 17rem;
user-select: none;
}
nav a {
color: #eee;
display: block;
padding: 12px 16px;
transition: .5s;
text-decoration: none;
-webkit-user-drag: none;
}
nav a:hover {
background-color: #39c;
}
#nav-collapse {
padding: 8px 12px;
position: absolute;
right: 0;
top: 0;
}
#nav-expand {
background-color: #333;
color: #eee;
display: block;
left: 0;
top: 0;
padding: 8px 12px;
position: absolute;
text-decoration: none;
transition: .5s linear;
user-select: none;
-webkit-user-drag: none;
}
#nav-expand:focus {
opacity: 0;
}
#nav-expand:focus ~ main {
margin-left: 17rem;
transition-delay: .25s;
}
#nav-expand:focus ~ nav {
left: 0;
transition-delay: .25s;
}
#nav-expand:hover {
background-color: #369;
color: #fff;
}
.icon {
display: inline-block;
background-position: center;
background-repeat: no-repeat;
height: 12px;
width: 12px;
}
.icon-cross {
background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAsAAAALCAYAAACprHcmAAAABHNCSVQICAgIfAhkiAAAAPdJREFUGJV1jz9LhWAYxc+9rVZDQ+DcEI0NLU19gxr6Ci3tuvjnA+gggSBt4qzzO90b5FBubkHgEM1CBL5K93Ia8jWv4G88/A7PeQAArusekXwRQpiGYSzQ4/v+Gcn3OI6vMRJf+cdWFXrxs8+bOI5vkCTJLckf/rMtiuJhJJIk67oWAIA0Te8mhR2klGvbtg/UvNlC27ZPSlwquaqqZwA1dmGe56uu676HxPO8U5IfMyuGp+fEt+nTQghzqWnaMYBDdUVKuXYc5yLLsnsAmz5e6Lp+AgCIouiK5FfTNCvLsvanT5dl+Wia5t6wOwiC87GoCMPwUom/I2EVwEqOzwUAAAAASUVORK5CYII=');
}
.icon-menu {
background-image: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAAMCAYAAABWdVznAAAABHNCSVQICAgIfAhkiAAAAB5JREFUKJFj/P///38GEgATKYoHKWAc9TQRgGRPAwD0IAv+FT8LPwAAAABJRU5ErkJggg==');
}
<a id="nav-expand" href="#">
<span class="icon icon-menu"></span>
Menu
</a>
<nav>
<a id="nav-collapse" href="#">
<span class="icon icon-cross"></span>
</a>
Link1
Link2
Link3
Link4
</nav>
<main>
<h2>Push Sidebar Exmaple</h2>
<p>Please click on menu button.</p>
</main>

How can I make the footer stop overlapping with the mobile NAV bar? On the mobile view, the NAV bar goes under the footer. Any solutions?

I have been trying to resolve this for quite some time, but I am able to find the solution.
On the mobile view, the NAV bar goes under the footer. I think there is some kind of mistake in HTML or CSS code. I tried adjusting the values also added many elements on CSS but nothing worked. Please check the codes for me.
const navSlide = () => {
const burger = document.querySelector('.burger');
const nav = document.querySelector('.nav-links');
const navLinks = document.querySelectorAll('.nav-links li');
burger.addEventListener('click', () => {
//Toggle Nav
nav.classList.toggle('nav-active');
//Animate Links
navLinks.forEach((link, index) => {
if (link.style.animation) {
link.style.animation = '';
} else {
link.style.animation = `navLinkFade 0.5s ease forwards ${index / 7 + 1.5}s`;
}
});
//Burger Animation
burger.classList.toggle('toggle');
});
}
navSlide();
*{
margin: 0px;
padding: 0px;
box-sizing: border-box;
/* For footer but can be used for everything*/
text-decoration: none;
list-style: none;
}
body {
background-color: #ffffff;
}
nav {
font-family: 'Roboto', sans-serif;
align-items: center;
min-height: 9vh;
background-color: #3b9aff;
display: flex;
justify-content: space-around;
}
.nav-links li a:hover{
padding: 14px 22px;
background-color: #ffba30;
transition: 0.3s;
}
.logo{
color: white;
text-transform: uppercase;
letter-spacing: 5px;
font-size: 20px;
}
.nav-links{
display: flex;
justify-content: space-between;
width: 30%;
}
.nav-links li{
list-style: none;
}
.nav-links a{
color: white;
text-decoration: none;
letter-spacing: 3px;
font-weight: bold;
font-size: 14px;
}
.burger{
display: none;
cursor: pointer;
}
.burger div{
width: 25px;
height: 3px;
background-color: white;
margin: 5px;
transition: all 0.3s ease;
}
.navbar a:hover, .dropdown:hover .dropbtn {
background-color: red;
padding: 16px 24px;
transition: 0.3s;
}
.dropdown-content {
display: none;
position: absolute;
background-color: #b3bae6;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
z-index: 1;
border: 2px solid red;
}
.dropdown-content a {
display: flex;
color: white;
text-decoration: none;
display: block;
padding: 12px 16px;
}
.footer{
width: 100vw;
display: block;
overflow: hidden;
padding: 70px 0;
box-sizing: border-box;
background-color: #3b9aff;
position: fixed;
bottom: 0;
}
.inner_footer{
display: block;
margin: 0 auto;
width: 1100px;
height: 100%;
}
.inner_footer .logo_container{
width: 35%;
float: left;
height: 100;
display: block;
}
.inner_footer .logo_container img{
width: 65px;
height: auto;
}
.inner_footer .footer_third{
width: calc(21.6666666667% - 20px);
margin-right: 10px;
float: left;
height: 100%;
}
.inner_footer .footer_third:last-child{
margin-right: 0;
}
.inner_footer .footer_third h1{
font-family: 'Roboto', sans-serif;
font-size: 22px;
color: white;
display: block;
width: 100%;
margin-bottom: 20px;
}
.inner_footer .footer_third a{
font-family: 'Roboto', sans-serif;
font-size: 18px;
color: white;
display: block;
font-weight: 200;
width: 100%;
padding-bottom: 5px;
}
.inner_footer .footer_third li{
display: inline-block;
padding: 0 5px;
font-size: 20px;
}
.inner_footer .footer_third span{
color: white;
font-family: 'Roboto', sans-serif;
font-size: 16px;
font-family: 200;
display: block;
width: 100%;
padding-top: 20px;
}
.dropdown:hover .dropdown-content {
display: block;
transition: 0.3s;
}
#media screen and (max-width:1024px){
.nav-links{
width: 60%;
}
}
#media screen and (max-width:760px){
body{
overflow-x: hidden;
}
.nav-links{
position: absolute;
right: 0px;
height: 92vh;
top: 8vh;
background: #3b9aff;
display: flex;
flex-direction: column;
align-items: center;
width: 50%;
transform: translateX(100%);
transition: transform 0.5s ease-in;
}
/*Mistake*/
nav-links{
opacity: 0;
}
.burger{
display: block;
}
}
.nav-active{
transform: translateX(0%);
}
#keyframes navLinkFade{
from{
opacity: 0;
transform: translateX(50px);
}
to{
opacity: 1;
transform: translateX(0px);
}
}
.toggle .line1{
transform: rotate(-45deg) translate(-5px,6px);
}
.toggle .line2{
opacity: 0;
}
.toggle .line3{
transform: rotate(45deg) translate(-5px,-6px);
}
#media(max-width:900px){
.footer .inner_footer{
width: 90%;
}
.inner_footer .logo_container,
.inner_footer .footer_third{
width: 100px;
margin-bottom: 30px;
}
}
<!DOCTYPE html>
<html>
<head>
<title>e-commerce</title>
<link href="https://fonts.googleapis.com/css2?family=Roboto&display=swap" rel="stylesheet">
<link rel="stylesheet" href="stylesheet.css">
<script src="https://kit.fontawesome.com/dadb58458c.js" crossorigin="anonymous"></script>
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
<nav>
<div class="logo">
<h4>First Education</h4>
</div>
<ul class="nav-links">
<li>
Home
</li>
<li>
About
</li>
<li>
Work
</li>
<li class="dropdown">
Projects
<div class="dropdown-content">
Link 1
Link 2
Link 3
</div>
</li>
</ul>
<div class="burger">
<div class="line1"></div>
<div class="line2"></div>
<div class="line3"></div>
</div>
</nav>
<div class="footer">
<div class="inner_footer">
<div class="logo_container">
<img src="logo.jpg">
</div>
<div class="footer_third">
<h1>Need Help?</h1>
Terms &amp Conditions
Privacy Policy
</div>
<div class="footer_third">
<h1>More Intel</h1>
Redeem Voucher
Free Courses
Redeem Voucher
Free Courses
</div>
<div class="footer_third">
<h1>Follow Us</h1>
<li><i class="fa fa-facebook"></i></li>
<li><i class="fa fa-twitter"></i></li>
<li><i class="fa fa-instagram"></i></li>
<span>11 th Floor, 15 St Botolph St, London EC3A 7BB, United Kingdom</span>
</div>
</div>
</div>
<script src="script.js"></script>
</body>
</html>

Add the following property in your css classname
.nav {
position: relative;
z-index: 1000;
...previous properties
}

Your nav has a min-height of 9vh. If the footer winds up being more than 91vh, then it'll overlap.
You're footer is also position:fixed and the text is quite long, which makes it likely to exceed that height. One thing that could work is position:sticky instead of position: fixed if you want the footer to move along with the page.

How to make CSS transition work using onclick

I am taking reference from :
https://codepen.io/SudhakarJ/pen/GRgpddL .
I want to make same transition effect in my application, where I have 10 images and I use 3 classes namely cars,animals and fruits and when I click they should be filtered.
But the animated filter selector is not performing transition
HTML
<div class="section">
<div id="wrapper-filter">
<ul id="filter-bar">
<span class="pill" style="color:#212121"></span>
<li class="filter-option option-1 active" onclick="filterSelection('all')" style="color:#fffefe">All</li>
<li class="filter-option option-2" onclick="filterSelection('cars')" style="color:#fffefe">Shoes</li>
<li class="filter-option option-3" onclick="filterSelection('animals')" style="color:#fffefe">Toys</li>
<li class="filter-option option-4" onclick="filterSelection('fruits')" style="color:#fffefe">Toys</li>
</ul>
</div>
css
body {background-color:#ffffff; margin: 0; padding:0; font-family: Tahoma;}
h2 {text-align:center;}
#filter-bar {width: 100%; margin:0; padding:0; height:36px; display:inline-flex;}
#wrapper-filter {background-color:#000; width: 570px; height:auto; margin:30px auto; border-radius: 30px; box-sizing: border-box;}
#filter-bar li {width: 190px;background-color: transparent; text-align: center; list-style-type: none;z-index:10; cursor: pointer; font-family: Open Sans, sans-serif; font-weight: 100; font-size: 15px;line-height:36px;}
.pill {position: absolute; width:190px; height: 38px; background-color: #39c; border-radius: 30px; color: #444; z-index:10; border: 5px solid #eee; box-sizing: border-box; }
.filter-option {transition: color 500ms;}
#filter-bar.option-1 .pill {margin-left: 0px; transition: margin-left 200ms ease;}
#filter-bar.option-2 .pill {margin-left: 187px; transition: margin-left 200ms ease;}
#filter-bar.option-3 .pill {margin-left: 380px; transition: margin-left 200ms ease;}
.option-1.active, .option-2.active, .option-3.active {color:#FFD700; transition: color 200ms; }
JS
$(document).ready(function() {
$("#filter-bar li").click(function() {
$("#filter-bar li").removeClass("active")
$(this).addClass("active")
$("#filter-bar").removeClass().addClass($(this).attr("data-target"))
})
})

Below is an adapted version of the codepen where:
menu width is changed from 570px to 760px to take in account the 4 elements instead of 3 (it could maybe done in a dynamic way to take in account any number of items)
item width is unchanged (190px)
onclick=filterSelection custom method is removed. JS retrieves the class to apply using the data-target-filter attr
CSS transitions rules are updated with your options (.all, .car, .animals, .fruits instead of example .option-1,.option-2,.option-3) so they match when the value is applied as a class on #bar-filter
$("#filter-bar li").click(function() {
$("#filter-bar li").removeClass("active");
$(this).addClass("active");
$("#filter-bar").removeClass().addClass($(this).attr("data-target-filter"));
});
#filter-bar {
width: 100%;
margin: 0;
padding: 0;
height: 36px;
display: inline-flex;
}
#wrapper-filter {
background-color: #000;
width: 760px;
height: auto;
margin: 30px auto;
border-radius: 30px;
box-sizing: border-box;
}
#filter-bar li {
width: 190px;
background-color: transparent;
text-align: center;
list-style-type: none;
z-index: 10;
cursor: pointer;
font-family: Open Sans, sans-serif;
font-weight: 100;
font-size: 15px;
line-height: 36px;
}
.pill {
position: absolute;
width: 190px;
height: 38px;
background-color: #39c;
border-radius: 30px;
color: #212121: z-index: 10;
border: 5px solid #eee;
box-sizing: border-box;
}
.filter-option {
transition: color 500ms;
color: #fffefe;
}
#filter-bar.all .pill {
margin-left: 0px;
transition: margin-left 200ms ease;
}
#filter-bar.cars .pill {
margin-left: 190px;
transition: margin-left 200ms ease;
}
#filter-bar.animals .pill {
margin-left: 380px;
transition: margin-left 200ms ease;
}
#filter-bar.fruits .pill {
margin-left: 570px;
transition: margin-left 200ms ease;
}
.all.active,
.cars.active,
.animals.active,
.fruits.active {
color: #FFD700;
transition: color 200ms;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="section">
<div id="wrapper-filter">
<ul id="filter-bar">
<span class="pill"></span>
<li class="filter-option all active" data-target-filter="all">All</li>
<li class="filter-option cars" data-target-filter="cars">Shoes</li>
<li class="filter-option animals" data-target-filter="animals">Toys</li>
<li class="filter-option fruits" data-target-filter="fruits">Fruits</li>
</ul>
</div>

Changing CSS panel to 100% width creates jumpy jQuery scroll

I'm trying to link the nav bar list items to transition a scroll to specific panels on the page. After making adjustment to the CSS to make all panel backgrounds (.maincontent) 100% page width the scroll effect no longer works...
CSS:
/****Landscape****/
/*global styles*/
.body {
width: 100%;
margin: 0;
list-style: none;
text-decoration: none;
font-size: 1.05em;
font-family: Helvetica Neue, Helvetica, Arial, Sans-serif;
}
a {
appearance: none;
font-size: 1.05em;
font-family: Helvetica Neue, Helvetica, Arial, Sans-serif;
background: transparent;
color: #000000;
border: none;
letter-spacing: 0.15em;
text-transform: uppercase;
transition: color 0.5s ease;
list-style: none;
text-decoration: none;
}
a:focus,
a:hover {
color: #e6e8eb;
cursor: pointer;
transition: color 0.5s ease;
width: inherit;
right: 0;
left: 0;
}
a:active {
color: #484747;
}
/*----/----global styles*/
/*Maincontent*/
.maincontent {
position: absolute;
top: 0;
left: 0;
width: 100%;
font-size: 1.05em;
font-family: Helvetica Neue, Helvetica, Arial, Sans-serif;
}
/*----/----Maincontent*/
/*contact panel*/
.letmeknow:hover {
color: #464c4c;
cursor: pointer;
transition: color 0.5s ease;
}
.letmeknow {
appearance: none;
width: 80%;
height: 50px;
font-size: 1.05em;
background: transparent;
color: #e6e8eb;
border: none;
letter-spacing: 0.15em;
text-transform: uppercase;
transition: color 0.5s ease;
outline: none;
border: none;
}
/*Contact submit Form*/
#container {
width: 840px;
margin: 25px auto;
}
.whysign {
float: left;
background-color: white;
width: 480px;
height: 347px;
border-radius: 0 5px 5px 0;
padding-top: 20px;
padding-right: 20px;
}
.signup {
float: left;
width: 300px;
padding: 30px 20px;
background-color: white;
text-align: center;
border-radius: 5px 0 0 5px;
}
[type=text] {
display: block;
margin: 0 auto;
width: 80%;
border: 0;
border-bottom: 1px solid rgba(0, 0, 0, .2);
height: 45px;
line-height: 45px;
margin-bottom: 10px;
font-size: 1em;
color: rgba(0, 0, 0, .4);
}
input[type="submit"] {
appearance: none;
width: 80%;
height: 50px;
font-size: 1.05em;
background: transparent;
color: #e6e8eb;
border: none;
letter-spacing: 0.15em;
text-transform: uppercase;
transition: color 0.5s ease;
outline: none;
border: none;
}
input[type="submit"]:hover {
color: #464c4c;
cursor: pointer;
transition: color 0.5s ease;
}
[type='text']:focus {
outline: none;
border-color: #53CACE;
}
span:hover {
color: #53CACE;
}
/*----/----contact form*/
/*Nav Bar*/
.header {
background: #ffffff;
width: 100%;
position: fixed;
top: 0;
left: 0;
z-index: 99999;
}
.nav {
background: #ffffff;
float: right;
text-align: right;
}
.nav > li {
display: inline-block;
padding: 2px;
padding-right: 30px;
}
/*----/----Nav Bar*/
/*Panels*/
.panel {
width: 100%;
background: #000000;
color: #ffffff;
height: 40em;
padding: 3em;
}
.links {
color: #ffffff;
}
.panel .inner {
padding-top: 10%;
color: #df
}
.panel.panel-blank {
background: #ffffff;
color: #000000;
}
/*----/----Panels*/
/*logo*/
.logo {
float: left;
display: inline-block;
width: 15px;
height: 15px;
padding: 18px;
cursor: pointer;
}
/*----/----logo*/
/****Portrait****/
#media (max-width: 850px) {
/*global styles*/
.body {
width: 100%;
margin: 0;
list-style: none;
text-decoration: none;
}
.header {
background: #ffffff;
width: 100%;
position: fixed;
top: 0;
left: 0;
}
.nav {
position: fixed;
width: 100%;
text-align: center;
display: none;
background-color: #ffffff;
left: 0;
top: 39px;
}
.nav > li {
postition: absolute;
display: block;
left: 0;
width: 100%;
padding-top: 0.6em;
padding-bottom: 1em;
}
.nav > li:hover {
postition: absolute;
display: block;
left: 0;
width: 100%;
padding-top: 0.6em;
padding-bottom: 1em;
cursor: pointer;
}
/*----/----global styles*/
/*logo*/
.logo {
float: left;
display: block;
width: 15px;
height: 15px;
padding: 18px;
cursor: pointer;
}
/*----/----logo*/
/*navigation icon*/
#toggle-menu {
float: right;
display: block;
width: 15px;
height: 15px;
padding: 20px;
}
#toggle-menu div {
width: 15px;
height: 15px;
position: relative;
}
#toggle-menu span {
display: block;
width: 15px;
height: 3px;
background: black;
position: absolute;
-webkit-transition: -webkit-transform 0.2s ease-in-out, top 0.2s ease-in-out 0.2s, opacity 0.2s ease-in-out 0.2s;
-moz-transition: -moz-transform 0.2s ease-in-out, top 0.2s ease-in-out 0.2s, opacity 0.2s ease-in-out 0.2s;
transition: transform 0.2s ease-in-out, top 0.2s ease-in-out 0.2s, opacity 0.2s ease-in-out 0.2s;
-webkit-transform-origin: center;
-moz-transform-origin: center;
transform-origin: center;
}
#toggle-menu span.top {
top: 0px;
}
#toggle-menu span.middle {
top: 6px;
}
#toggle-menu span.bottom {
top: 12px;
}
/*----/----navigation icon*/
/*navigation icon animation*/
#toggle-menu.menu-is-active span {
-webkit-transition: -webkit-transform 0.2s ease-in-out 0.2s, top 0.2s ease-in-out, opacity 0.2s ease-in-out;
-moz-transition: -moz-transform 0.2s ease-in-out 0.2s, top 0.2s ease-in-out, opacity 0.2s ease-in-out;
transition: transform 0.2s ease-in-out 0.2s, top 0.2s ease-in-out, opacity 0.2s ease-in-out;
}
#toggle-menu.menu-is-active span.top,
#toggle-menu.menu-is-active span.middle {
top: 6px;
-webkit-transform: rotate(45deg);
-moz-transform: rotate(45deg);
transform: rotate(45deg);
}
#toggle-menu.menu-is-active span.middle {
opacity: 0;
}
#toggle-menu.menu-is-active span.bottom {
top: 6px;
-webkit-transform: rotate(-45deg);
-moz-transform: rotate(-45deg);
transform: rotate(-45deg);
}
/*----/----navigation icon animation*/
}
/*----/----Portrait*/
jQuery:
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script>
jQuery(document).ready(function () {
$(window).resize(function(){
if ($(window).width() >=850) {
$(".nav").show();
}
else{ $(".nav").hide();}
});
$('#toggle-menu').click(function () {
$(this).toggleClass('menu-is-active')
});
/* click outside of nav to trigger navigation icon animation*/
$(document).click(function () {
$("#toggle-menu").removeClass();
});
$("nav").click(function (e) {
e.stopPropagation();
return false;
});
/*----/----navigation icon animation*/
/*toggle menu*/
jQuery("#toggle-menu").click(function () {
jQuery(".nav").slideToggle();
});
/* click outside of nav to close toggle*/
$(document).click(function () {
if ($(window).width() < 850) {
$(".nav").hide();
} else {
$(".nav").show();
}
});
$("#toggle-menu").click(function (e) {
e.stopPropagation();
return false;
});
/*----/----toggle menu*/
/*Jump Scroll*/
$(function() {
var $window = $(window), $document = $(document),
transitionSupported = typeof document.body.style.transitionProperty === "string", // detect CSS transition support
scrollTime = 1; // scroll time in seconds
$(document).on("click", "a[href*=#]:not([href=#])", function(e) {
var target, avail, scroll, deltaScroll;
if (location.pathname.replace(/^\//, "") == this.pathname.replace(/^\//, "") && location.hostname == this.hostname) {
target = $(this.hash);
target = target.length ? target : $("[id=" + this.hash.slice(1) + "]");
if (target.length) {
avail = $document.height() - $window.height();
if (avail > 0) {
scroll = target.offset().top;
if (scroll > avail) {
scroll = avail;
}
} else {
scroll = 0;
}
deltaScroll = $window.scrollTop() - scroll;
// if we don't have to scroll because we're already at the right scrolling level,
if (!deltaScroll) {
return; // do nothing
}
e.preventDefault();
if (transitionSupported) {
$("html").css({
"margin-top": deltaScroll + "px",
"transition": scrollTime + "s ease-in-out"
}).data("transitioning", scroll);
} else {
$("html, body").stop(true, true) // stop potential other jQuery animation (assuming we're the only one doing it)
.animate({
scrollTop: scroll + "px"
}, scrollTime * 1000);
return;
}
}
}
});
if (transitionSupported) {
$("html").on("transitionend webkitTransitionEnd msTransitionEnd oTransitionEnd", function(e) {
var $this = $(this),
scroll = $this.data("transitioning");
if (e.target === e.currentTarget && scroll) {
$this.removeAttr("style").removeData("transitioning");
$("html, body").scrollTop(scroll);
}
});
}
});
/*----/----Jump Scroll*/
/*contact let me know toggle*/
jQuery(".letmeknow").click(function () {
jQuery(".container").slideToggle();
});
/*----/-----contact let me know toggle*/
});
HTML:
<div class="header">
<div class="navbar">
LogoPlaceHolder
<a id="toggle-menu">
<div>
<span class="top"></span>
<span class="middle"></span>
<span class="bottom"></span>
</div>
</a>
<ul class="nav">
<li>Home</li>
<li>About</li>
<li>Work</li>
<li>Contact</li>
</ul>
</div>
</div>
<div class="maincontent">
<div class="panel multiplepanels" id="panel1">
<div class="inner"> 1 </div>
</div>
<div class="panel panel-blank multiplepanels" id="panel2">
<div class="inner">
<p>Work Title 1</p> View Project → </div>
</div>
<div class="panel multiplepanels" id="panel3">
<div class="inner">
<p>Work Title 2</p> View Project → </div>
</div>
<div class="panel panel-blank multiplepanels" id="panel4">
<div class="inner">
<p>Work Title 3</p> View Project → </div>
</div>
<div class="panel multiplepanels" id="panel5">
<div class="inner">
<p>Work Title 4</p> View Project → </div>
</div>
<div class="panel panel-blank multiplepanels" id="panel6">
<div class="inner">
<p>Work Title 5</p> View Project → </div>
</div>
<div class="panel multiplepanels" id="panel7">
<div class="inner">
<p>Work Title 6</p> View Project → </div>
</div>
<div class="panel panel-blank multiplepanels" id="panel8">
<div class="inner">
<P>Like what I do?</P>
<p>Let me know</p>
<div id='container'>
<div class='signup'>
<p> Send me a message </p>
<form>
<input type='text' placeholder='First:' />
<input type='text' placeholder='Last:' />
<input type='text' placeholder='Email:' />
<input type='text' placeholder='Phone:' />
<input type='submit' placeholder='SUBMIT' />
</form>
</div>
</div>
<div class="thank you">
<p>Thank you for your message!</p>
</div>
</div>
</div>
<div class="panel multiplepanels" id="panel9">
<div class="inner">
<p>Social</p>
</div>
</div>
</div>
<footer>
<div class="panel panel-blank" id="panel10">
<div class="inner"> © 2015 thiswebsite.com</div>
</div>
</footer>

It is caused by giving .maincontent absolute positioning. This makes html not be the full height of the document. And the script relies on this for the transition. So here are a few changes to make :
Demo
Take a way the dot from body (sidenote) :
.body {
...
}
Remove positioning here :
.maincontent {
width: 100%;
font-size: 1.05em;
font-family: Helvetica Neue, Helvetica, Arial, Sans-serif;
}
And then box-sizing on this element to remove the horizontal scrollbar :
.panel {
width: 100%;
background: #000000;
color: #ffffff;
height: 40em;
padding: 3em;
box-sizing: border-box;
}

Z-index issue on navbar

I'm having some issues with my navbar menu for my site. I want to have the main menu, a sub menu and a sub menu to that. So 3 levels total.
So far I have gotten the 2 levels to work, but I cannot get the 3rd level to go under the 2nd with z-indexing. Currently they are only on the same index it appears.
Anything I've tried messes up with the jQuery script I did for displaying the select instead of the menu when on small screens.
So how can I do this?
Fiddle (Go Products > Oticon).
HTML
<header>
<select class="menu_mobile_top">
<option>Home</option>
<option>Services</option>
<option>Products</option>
<option>Shop</option>
<option>Prices</option>
<option>About</option>
<option>Contact</option>
</select>
<nav>
<ul class="nav">
<li role="presentation" class="active">Home</li>
<li role="presentation">Services
<ul class="subnav">
<li role="presentation">Service 1
<li role="presentation">Service 2
<li role="presentation">Service 3
</ul>
</li>
<li role="presentation">Products
<ul class="subnav">
<li role="presentation">Phonak</li>
<li role="presentation">ReSound</li>
<li role="presentation">Siemens</li>
<li role="presentation">Starkey</li>
<li role="presentation">Widex</li>
<li role="presentation">Oticon
<ul class="subnavoptions">
<li role="presentation">Test1</li>
<li role="presentation">Test 2</li>
</ul>
</li>
<li role="presentation">Unitron</li>
<li role="presentation">Bernafon</li>
</ul>
</li>
<li role="presentation">Shop</li>
<li role="presentation">Prices</li>
<li role="presentation">About</li>
<li role="presentation">Contact</li>
</ul>
</nav>
</header>
CSS
body {
font-size: 0;
text-align: center;
background-image: url('../images/bg.png');
background-repeat: repeat;
font-family: 'Montserrat', sans-serif;
}
header {
width: 100%;
height: 50px;
background: #304770;
z-index: 10;
}
h1 {
font-family: 'Montserrat', sans-serif;
font-weight: bold;
font-size: 34pt;
}
a {
text-decoration: none;
color: inherit;
}
nav {
position: relative;
width: 100%;
z-index: 10;
}
a:hover {
text-decoration: none;
color: inherit;
}
::-webkit-input-placeholder {
color: #99C2EC;
}
:-moz-placeholder { /* Firefox 18- */
color: #99C2EC;
}
::-moz-placeholder { /* Firefox 19+ */
color: #99C2EC;
}
:-ms-input-placeholder {
color: #99C2EC;
}
.bodyframe {
display: inline-block;
box-shadow: 0 6px 15px rgba(0, 0, 0, 0.6);
}
.div_container {
max-width: 1460px;
width: 100%;
display: inline-block;
margin: 0 auto;
}
.logo-div {
padding: 15px 0 10px;
}
.logo-div div {
display: inline-block;
width: 50%;
font-size: 14px;
color: #304770;
}
.center {
margin: 0 auto;
}
.nav-offset {
display: inline-block;
}
.nav {
height: 50px;
display: block;
position: relative;
list-style: none;
background: #304770;
}
.nav li {
display: inline-block;
background-color: #304770;
margin: 0 5px;
position: static;
}
.nav li a {
padding: 12px 15px;
font-size: 18px;
color: #EFEFEF;
display: block;
}
.nav li.active a {
color: orange;
}
.nav > li.active > a:before {
width: 100%;
}
.nav li:hover > a {
background-color: #304770;
color: orange;
transition: color 0.25s;
}
.nav > li > a:before {
content: "";
display: block;
position: absolute;
left: 0;
bottom: 0;
height: 3px;
width: 0;
background-color: orange;
-webkit-transition: width 0.2s;
-moz-transition: width 0.2s;
-o-transition: width 0.2s;
transition: width 0.2s;
}
.nav > li:nth-last-of-type(1) > a:after {
display: none;
}
.nav li a:hover:before {
width: 100%;
}
.nav > li > a:after {
content: "";
display: block;
position: absolute;
right: -8px;
top: 21px;
height: 6px;
width: 6px;
background: #ffffff;
opacity: .5;
}
.nav li:hover .subnav {
top: 49px;
}
.subnav {
border-bottom: 1px solid #304770;
width: 100%;
list-style-type: none;
display: block;
position: absolute;
top: 12px;
z-index: -1;
left: 0;
margin: 0;
padding: 0;
background-color: #ccc;
transition: top 0.2s;
-webkit-transition: top 0.2s;
-moz-transition: top 0.2s;
-o-transition: top 0.2s;
-webkit-transition-delay: 0.05s;
-moz-transition-delay: 0.05s;
-o-transition-delay: 0.05s;
transition-delay: 0.05s;
}
.subnav > li {
display: inline-block;
background-color: #ccc;
margin: 0;
padding: 0 5px;
}
.subnav li a {
padding: 8px 10px;
font-size: 14px;
color: #304770;
display: block;
}
.subnav li:hover .subnavoptions {
top: 36px;
}
.subnavoptions {
border-bottom: 1px solid #304770;
width: 100%;
list-style-type: none;
display: block;
position: absolute;
top: 0px;
z-index: -2;
left: 0;
margin: 0;
padding: 0;
background-color: #EFEFEF;
transition: top 0.2s;
-webkit-transition: top 0.2s;
-moz-transition: top 0.2s;
-o-transition: top 0.2s;
-webkit-transition-delay: 0.05s;
-moz-transition-delay: 0.05s;
-o-transition-delay: 0.05s;
transition-delay: 0.05s;
}
.subnavoptions li {
display: inline-block;
background-color: #ccc;
margin: 0 5px;
}
.subnavoptions li a {
padding: 8px 10px;
font-size: 14px;
color: #304770;
display: block;
}
.menu_mobile_top {
display: none;
position: relative;
font-size: 16px;
top: 5px;
background-color: #2A333F;
border: 1px solid transparent;
color: #EFEFEF;
width: 250px;
margin: 5px 0;
padding: 3px;
}
.menu_mobile_top:focus, option:focus {
outline: none !important;
border-color: orange;
}

I don't see the styles defined for third level menu. Add the following and try.
.subnavoptions li a li{
top:50px;
}