Develop Reference

Responsive Navigation Hamburger Menu not working

I'm trying to make my navigation responsive but when i tried to resize my window, my hamburger doesn't allow the dropdown function to work. I took both the navigation and responsive hamburger online so is there somewhere that might be overwriting the hamburger ?
This is my HTML
<header>
<div class="logo">
<p>LEGEND</p>
<div class= "hamburger">
<div class="line"></div>
<div class="line"></div>
<div class="line"></div>
</div>
</div>
<nav class="nav-bar">
<ul>
<li>HOME</li>
<li>STORE</li>
<li>MY ACCOUNT</li>
<li>SEARCH</li>
</ul>
</nav>
<button>
<a href="#">
<h4 style="color: #f5f5f5">PLAY DIVINE</h4>
</a>
</button>
</header>
This is my css
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
background-color: #12171c;
}
header {
width: 100%;
display: flex;
justify-content: space-between;
align-items: center;
padding: 10px 10%;
background: rgba(0, 0, 0, 0.2);
position: fixed;
height: 10%;
}
.logo {
font-size: 30px;
font-weight: bold;
color: white;
letter-spacing: 1.5px;
cursor: pointer;
}
.nav-bar li {
display: inline-block;
list-style: none;
padding: 0px 15px;
}
a, button {
font-size: 16px;
font-weight: 500;
color: #b7b9bb;
text-decoration: none;
cursor: pointer;
}
button {
background: #967526;
border: 2px solid #ffce1f;
padding: 9px 25px;
}
.header-pic {
width: 100%;
height: 100%;
background-size: cover;
}
.hamburger {
display: none;
}
This is my css when it's responsive
#media only screen and (max-width: 1320px) {
.hamburger {
display: block;
cursor: pointer;
}
.hamburger .line {
width: 30px;
height: 3px;
background: #fefefe;
margin: 6px 0;
}
.nav-bar {
height: 0;
position: absolute;
top: 80px;
left: 0;
right: 0;
width: 100vw;
background: #11101b;
transition: 0.2s;
overflow: hidden;
}
.nav-bar.active {
height: 450px;
}
.nav-bar ul {
display: block;
width: fit-content;
margin: 80px auto 0 auto;
text-align: center;
transition: 0.5s;
opacity: 0;
}
.nav-bar.active ul {
opacity: 1;
}
.nav-bar ul li a {
margin-botton: 12px;
}
}
This is my javascript
<script>
hamburger = document.querySelector(".hamburger");
hamburger.onClick = function() {
navBar = document.querySelector(".nav-bar");
navbar.classList.toggle("active");
}
</script>

UPDATE
I revised the solution so that the 2 blocks are for:
In small screen but active is not on
In small screen and active is on
This separation protects the style from broken when transition happen as active toggles.
More styles can be added to the first block to define how this list should look like, such as making it display the list in column.
Example:
.nav-bar ul {
display: flex;
flex-direction: column;
width: fit-content;
margin: 80px auto 0 auto;
text-align: center;
transition: 0.5s;
opacity: 0;
}
.nav-bar.active ul {
opacity: 1;
}
Original
This is because your JS code has some syntax error. Here is what to do:
Use const to declare hamburger and navbar.
Call addEventListener on hamburger to add the function for toggling class of navbar
Follow the below example to revise your code, or visit a live demo of it fixed here: codepen
const hamburger = document.querySelector(".hamburger");
const navbar = document.querySelector(".nav-bar");
hamburger.addEventListener("click", () => navbar.classList.toggle("active"));
Hope this solution will help.

Your code has nothing wrong, just few typos in your JavaScript:
You have onClick instead of onclick
navbar instead of navBar at navbar.classList.toggle("active")
Corrected version
<script>
hamburger = document.querySelector(".hamburger");
hamburger.onclick = function() {
navBar = document.querySelector(".nav-bar");
navBar.classList.toggle("active");
}
</script>
Extra (Change display: block; to display: grid; in .nav-bar ul selector in CSS media query to display dropdown in vertical list)
.nav-bar ul {
display: grid;
width: fit-content;
margin: 80px auto 0 auto;
text-align: center;
transition: 0.5s;
opacity: 0;
}
hamburger = document.querySelector(".hamburger");
hamburger.onclick = function() {
navBar = document.querySelector(".nav-bar");
navBar.classList.toggle("active");
}
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
background-color: #12171c;
}
header {
width: 100%;
display: flex;
justify-content: space-between;
align-items: center;
padding: 10px 10%;
background: rgba(0, 0, 0, 0.2);
position: fixed;
height: 10%;
}
.logo {
font-size: 30px;
font-weight: bold;
color: white;
letter-spacing: 1.5px;
cursor: pointer;
}
.nav-bar li {
display: inline-block;
list-style: none;
padding: 0px 15px;
}
a,
button {
font-size: 16px;
font-weight: 500;
color: #b7b9bb;
text-decoration: none;
cursor: pointer;
}
button {
background: #967526;
border: 2px solid #ffce1f;
padding: 9px 25px;
}
.header-pic {
width: 100%;
height: 100%;
background-size: cover;
}
.hamburger {
display: none;
}
#media only screen and (max-width: 1320px) {
.hamburger {
display: block;
cursor: pointer;
}
.hamburger .line {
width: 30px;
height: 3px;
background: #fefefe;
margin: 6px 0;
}
.nav-bar {
height: 0;
position: absolute;
top: 80px;
left: 0;
right: 0;
width: 100vw;
background: #11101b;
transition: 0.2s;
overflow: hidden;
}
.nav-bar.active {
height: 450px;
}
.nav-bar ul {
display: grid;
width: fit-content;
margin: 80px auto 0 auto;
text-align: center;
transition: 0.5s;
opacity: 0;
}
.nav-bar.active ul {
opacity: 1;
}
.nav-bar ul li a {
margin-bottom: 12px;
}
}
<header>
<div class="logo">
<p>LEGEND</p>
<div class="hamburger">
<div class="line"></div>
<div class="line"></div>
<div class="line"></div>
</div>
</div>
<nav class="nav-bar">
<ul>
<li>HOME</li>
<li>STORE</li>
<li>MY ACCOUNT</li>
<li>SEARCH</li>
</ul>
</nav>
<button>
<a href="#">
<h4 style="color: #f5f5f5">PLAY DIVINE</h4>
</a>
</button>
</header>
Better Solution
Quote from MDN Web Docs, as in this link:
The recommended mechanism for adding event handlers in web pages is the addEventListener() method
You may use addEventListener() to achieve the same result:
<script>
hamburger = document.querySelector(".hamburger");
hamburger.addEventListener("click", () => {
navBar = document.querySelector(".nav-bar");
navBar.classList.toggle("active");
});
</script>
hamburger = document.querySelector(".hamburger");
hamburger.addEventListener("click", () => {
navBar = document.querySelector(".nav-bar");
navBar.classList.toggle("active");
});
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
background-color: #12171c;
}
header {
width: 100%;
display: flex;
justify-content: space-between;
align-items: center;
padding: 10px 10%;
background: rgba(0, 0, 0, 0.2);
position: fixed;
height: 10%;
}
.logo {
font-size: 30px;
font-weight: bold;
color: white;
letter-spacing: 1.5px;
cursor: pointer;
}
.nav-bar li {
display: inline-block;
list-style: none;
padding: 0px 15px;
}
a,
button {
font-size: 16px;
font-weight: 500;
color: #b7b9bb;
text-decoration: none;
cursor: pointer;
}
button {
background: #967526;
border: 2px solid #ffce1f;
padding: 9px 25px;
}
.header-pic {
width: 100%;
height: 100%;
background-size: cover;
}
.hamburger {
display: none;
}
#media only screen and (max-width: 1320px) {
.hamburger {
display: block;
cursor: pointer;
}
.hamburger .line {
width: 30px;
height: 3px;
background: #fefefe;
margin: 6px 0;
}
.nav-bar {
height: 0;
position: absolute;
top: 80px;
left: 0;
right: 0;
width: 100vw;
background: #11101b;
transition: 0.2s;
overflow: hidden;
}
.nav-bar.active {
height: 450px;
}
.nav-bar ul {
display: grid;
width: fit-content;
margin: 80px auto 0 auto;
text-align: center;
transition: 0.5s;
opacity: 0;
}
.nav-bar.active ul {
opacity: 1;
}
.nav-bar ul li a {
margin-bottom: 12px;
}
}
<header>
<div class="logo">
<p>LEGEND</p>
<div class="hamburger">
<div class="line"></div>
<div class="line"></div>
<div class="line"></div>
</div>
</div>
<nav class="nav-bar">
<ul>
<li>HOME</li>
<li>STORE</li>
<li>MY ACCOUNT</li>
<li>SEARCH</li>
</ul>
</nav>
<button>
<a href="#">
<h4 style="color: #f5f5f5">PLAY DIVINE</h4>
</a>
</button>
</header>
Alternate Solution
For readers who are more familiar to add() / remove(), here's some alternatives:
<script>
hamburger = document.querySelector(".hamburger");
hamburger.addEventListener("click", () => {
navBar = document.querySelector(".nav-bar");
if (navBar.classList.contains("active")) {
navBar.classList.remove("active");
} else {
navBar.classList.add("active");
}
});
</script>
hamburger = document.querySelector(".hamburger");
hamburger.addEventListener("click", () => {
navBar = document.querySelector(".nav-bar");
if (navBar.classList.contains("active")) {
navBar.classList.remove("active");
} else {
navBar.classList.add("active");
}
});
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
background-color: #12171c;
}
header {
width: 100%;
display: flex;
justify-content: space-between;
align-items: center;
padding: 10px 10%;
background: rgba(0, 0, 0, 0.2);
position: fixed;
height: 10%;
}
.logo {
font-size: 30px;
font-weight: bold;
color: white;
letter-spacing: 1.5px;
cursor: pointer;
}
.nav-bar li {
display: inline-block;
list-style: none;
padding: 0px 15px;
}
a,
button {
font-size: 16px;
font-weight: 500;
color: #b7b9bb;
text-decoration: none;
cursor: pointer;
}
button {
background: #967526;
border: 2px solid #ffce1f;
padding: 9px 25px;
}
.header-pic {
width: 100%;
height: 100%;
background-size: cover;
}
.hamburger {
display: none;
}
#media only screen and (max-width: 1320px) {
.hamburger {
display: block;
cursor: pointer;
}
.hamburger .line {
width: 30px;
height: 3px;
background: #fefefe;
margin: 6px 0;
}
.nav-bar {
height: 0;
position: absolute;
top: 80px;
left: 0;
right: 0;
width: 100vw;
background: #11101b;
transition: 0.2s;
overflow: hidden;
}
.nav-bar.active {
height: 450px;
}
.nav-bar ul {
display: grid;
width: fit-content;
margin: 80px auto 0 auto;
text-align: center;
transition: 0.5s;
opacity: 0;
}
.nav-bar.active ul {
opacity: 1;
}
.nav-bar ul li a {
margin-bottom: 12px;
}
}
<header>
<div class="logo">
<p>LEGEND</p>
<div class="hamburger">
<div class="line"></div>
<div class="line"></div>
<div class="line"></div>
</div>
</div>
<nav class="nav-bar">
<ul>
<li>HOME</li>
<li>STORE</li>
<li>MY ACCOUNT</li>
<li>SEARCH</li>
</ul>
</nav>
<button>
<a href="#">
<h4 style="color: #f5f5f5">PLAY DIVINE</h4>
</a>
</button>
</header>

New HTML Section after Homescreen stuck at top of the page

I've created a full page video background homescreen for a website and am wanting to add the next section "About" below the homepage however, the about-section is stuck to the top of the site and I can't figure out why. I'd like the video background to remain fixed so it covers the entire site, I also have a sidebar that pops in with menu options so I believe I'm going wrong somewhere with the positioning of it all.
#import url('https://fonts.googleapis.com/css2?family=Oswald:wght#300;400;500;700&family=Oxygen:wght#300;400;700&family=Space+Grotesk:wght#300;400;500;700');
#import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght#300;400;500;700');
:root {
--overlay-color: rgb(105, 104, 104);
--font-secondary: 'Oxygen', sans-serif;
--font-primary: 'Space Grotesk', sans-serif;
}
* {
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: 'Oswald', sans-serif;
}
.showcase {
position: absolute;
right: 0;
width: 100%;
min-height: 100vh;
padding: 100px;
display: flex;
justify-content: space-between;
align-items: center;
background: #111;
color: #fff;
z-index: 2;
transition: 0.5s;
}
.showcase.active {
right: 300px;
}
.showcase header {
position: fixed;
top: 0;
left: 0;
width: 100%;
padding: 40px 100px;
z-index: 10;
display: flex;
align-items: center;
justify-content: space-between;
}
.logo-container {
cursor: pointer;
position: relative;
left: -40px;
}
.logo {
width: 100px;
cursor: pointer;
}
.toggle {
position: relative;
width: 60px;
height: 60px;
background: url('images/menu.png');
background-repeat: no-repeat;
background-size: 30px;
background-position: center;
cursor: pointer;
right: -40px;
}
.toggle.active {
background: url('images/close.png');
filter: invert(1);
background-repeat: no-repeat;
background-size: 20px;
background-position: center;
}
.showcase video {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
object-fit: cover;
opacity: 0.8;
}
.overlay {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: var(--overlay-color);
mix-blend-mode: overlay;
}
.text {
position: relative;
z-index: 10;
margin: 0 auto;
}
.text h2 {
font-size: 5.5em;
font-weight: 700;
line-height: 1.1em;
text-transform: uppercase;
text-align: center;
z-index: 10;
}
.text p {
font-size: 1.2em;
margin-top: 30px;
font-weight: 300;
max-width: 700px;
font-family: var(--font-primary);
text-align: center;
line-height: 1.5em;
width: 490px;
}
.contact-container {
position: fixed;
bottom: 30px;
text-transform: uppercase;
color: #fff;
z-index: 10;
left: 75px;
font-size: 1.03em;
letter-spacing: 2px;
}
.contact-container a {
font-family: var(--font-primary);
text-decoration: none;
color: #fff;
}
.cool-link::after {
content: '';
display: block;
width: 0;
margin-top: 2px;
height: 2px;
background: #fff;
transition: width .3s;
}
.cool-link:hover::after {
width: 100%;
transition: width .3s;
}
/* SOCIAL ICONS */
.social {
position: fixed;
bottom: 18px;
right: 40px;
z-index: 10;
display: flex;
justify-content: center;
align-items: center;
}
.social li {
list-style: none;
}
.social-icon {
display: inline-block;
transform: scale(0.5);
margin-right: 25px;
transition: 0.5s;
font-size: 40px;
cursor: pointer;
}
.social-icon.active {
color: black;
}
.social-icon:hover {
transform: scale(0.5) translateY(-15px)
}
.menu {
position: absolute;
top: 0;
right: 0;
width: 300px;
/* background-color: white;
z-index: 100; */
height: 100%;
display: flex;
align-items: center;
justify-content: center;
}
.menu ul {
position: relative;
list-style: none;
text-align: center;
}
.menu ul li a {
text-decoration: none;
font-size: 25px;
line-height: 2em;
color: #111;
}
.menu ul li a:hover {
color: var(--overlay-color);
}
/* HOME IMAGES */
.images {
position: absolute;
display: flex;
flex-direction: column;
}
.image1 {
position: relative;
top: 210px;
left: 220px;
}
.image1 img {
width: 170px;
opacity: .9;
}
.image2 {
position: relative;
left: 30px;
top: 235px;
}
.image2 img {
width: 300px;
opacity: .9;
}
.image3 {
position: relative;
left: 778px;
top: -255px;
}
.image3 img {
width: 300px;
height: 170px;
opacity: .9;
}
.image4 {
position: relative;
left: 995px;
top: -278px;
}
.image4 img {
width: 170px;
opacity: .9;
height: 230px;
}
/* ABOUT SECTION */
#about {
padding: 40px;
text-align: center;
}
#about p {
font-size: 1.2rem;
max-width: 600px;
margin: auto;
}
#about h2 {
margin: 30px 0;
color: var(--primary-color);
}
.social a {
margin: 0 5px;
}
/* MEDIA QUERIES */
#media(max-width: 798px) {
.showcase,
.showcase header {
padding: 40px;
}
.text h2 {
font-size: 3em;
}
}
<script src="https://kit.fontawesome.com/914efae9b6.js" crossorigin="anonymous"></script>
<section class="showcase">
<header>
<div class="logo-container">
<img class="logo" src="/images/logo.png" alt="">
</div>
<div class="toggle"></div>
</header>
<div class="overlay"></div>
<video src="/images/black.mp4" muted loop autoplay></video>
<div class="text">
<h2>Back Your</h2>
<h2>creators</h2>
</div>
<div class="images">
<div class="image1">
<img src="/images/cardmapr-E4s8t8EfDu4-unsplash.jpg" alt="">
</div>
<div class="image2">
<img src="/images/aronpw-0caikkln3Ag-unsplash.jpg" alt="">
</div>
<div class="image3">
<img src="/images/image.png" alt="">
</div>
<div class="image4">
<img src="/images/joshua-rawson-harris-oEEdL2vZKJg-unsplash.jpg" alt="">
</div>
</div>
<ul class="social">
<li class="social-icon"><i class="fab fa-facebook-f"></i></li>
<li class="social-icon"><i class="fab fa-instagram"></i></li>
<li class="social-icon"><i class="fab fa-tiktok"></i></li>
</ul>
<div class="contact-container">
<a class="cool-link" href="#">Contact</a>
</div>
<!-- Scroll arrow -->
<a class="ca3-scroll-down-link ca3-scroll-down-arrow" data-ca3_iconfont="ETmodules" data-ca3_icon=""></a>
</section>
<div class="menu">
<ul>
<li>Home</li>
<li>About</li>
<li>Product</li>
<li>Contact</li>
</ul>
</div>
<section id="about">
<h1>About</h1>
<p>
This is a landing page with a full screen video background. This section will be for the about page
</p>
<h2>Follow Me On Social Media</h2>
<div class="social">
<i class="fab fa-twitter fa-3x"></i>
<i class="fab fa-facebook fa-3x"></i>
<i class="fab fa-github fa-3x"></i>
<i class="fab fa-linkedin fa-3x"></i>
</div>
</section>
Thanks in advance if anyone can point out where I'm going wrong!

you can do .showcase{ position: relative} so it will look like this:
.showcase {
position: relative
right: 0;
width: 100%;
min-height: 100vh;
padding: 100px;
display: flex;
justify-content: space-between;
align-items: center;
background: #111;
color: #fff;
z-index: 2;
transition: 0.5s;
}
it will fix it, if you must have show case as absolute, so you can do
#about {
position:absolute;
top:100vh;
width:100vw;
}

The code for my navbar does not work properly

I'm a beginner trying to code a navbar in a practice website but I can't get the final product right.
My navbar is supposed to line up horizontally along the top of the page and then be follow the page as you scroll with a black shadow backdrop. Currently when you load the page, the words line up vertically on the right side, and then condense when you scroll. I also have a logo in the top left that shrinks way too small. Finally, when when you shrink the page, a hamburger icon pops up in the top right that is supposed to show you the menu options, however it no longer works. It's like a cycle with this page, I fix one thing and break another. I am doing this just for fun because I'm trying to learn but now I'm getting frustrated, Thanks!
$(window).on('scroll', function() {
if ($(window).scrollTop()) {
$('nav').addClass('black');
} else {
$('nav').removeClass('black');
}
})
$(document).ready(function() {
$(".menu i").click(function() {
$("nav ul").toggleClass("active")
})
})
#import url('https://fonts.googleapis.com/css?family=Bungee|Bungee+Hairline|Oswald|Raleway&display=swap');
body {
margin: 0;
padding: 0;
height: 100%;
width: 100%;
}
nav {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100px;
padding: 10px 100px;
box-sizing: border-box;
transition: .5s;
}
nav.black {
background: rgba(0, 0, 0, .8);
height: 80px;
padding: 10px 50px;
}
nav.logo {
float: left;
}
nav .logo img {
height: 80px;
transition: .5s;
}
nav.black .logo img {
padding: 20px;
height: 60px;
}
nav ul {
float: right;
margin: 0;
padding: 0px;
display: flex;
text-shadow: 2px 2px 4px #000000;
}
nav ul li {
List-style: none;
}
nav ul li a {
Line-height: 80px;
color: #fff;
padding: 5px 20px;
font-family: 'Raleway', sans-serif;
text-decoration: none;
text-transform: uppercase;
transition: .5s;
}
nav.black ul li a {
color: #fff;
Line-height: 20px;
}
nav ul li a.active,
nav ul li a:hover {
color: #fff;
background: #008cff;
}
.responsive-bar {
display: none;
}
#media (max-width: 800px) {
.responsive-bar {
display: block;
width: 100%;
height: 60px;
background: #262626;
position: fixed;
top: 0;
Left: 0;
padding: 5px 20px;
box-sizing: border-box;
z-index: 1;
}
.responsive-bar .logo img {
float: left;
height: 50px;
}
.responsive-bar .menu i {
float: right;
color: #fff;
margin: 0;
padding: 0;
Line-height: 50px;
cursor: pointer;
text-transform: uppercase;
}
nav {
padding: 60px;
}
nav.black {
display: none;
background: #262626;
height: 60px;
padding: 0;
}
nav .logo {
display: none;
}
nav ul {
position: absolute;
width: 100%;
top: 60;
Left: 0;
background: #262626;
float: none;
display: none;
}
nav ul.active {
display: block;
}
nav ul li {
width: 100%
}
nav ul li a {
display: block;
padding: 15px;
width: 100%;
height: 60px;
text-align: center;
Line-height: 30px;
color: #fff;
}
}
* {
box-sizing: border-box;
}
.main {
height: 1000px;
padding-left: 20px;
padding-right: 100px;
}
<div class="responsive-bar">
<div class="logo">
<img src="img/logo.png">
</div>
<div class="menu">
<i class="fa fa-bars"></i>
</div>
</div>
<nav>
<div class="logo">
<img src="img/logo.png">
</div>
<ul>
<div class="active">
<li>Home</li>
<li>About</li>
<li>Services</li>
<li>Portfolio</li>
<li>Contact</li>
</div>
</ul>
</nav>
<div class="main">
</div>
<script src="https://code.jquery.com/jquery-3.4.1.js"></script>

How do I make my hamburger menu icon be on top of my banner image?

I'm having issues making the hamburger icon be on top of the banner image. I've tried adjusting the z-index, setting the nav background-color to transparent, and placing the background image in the header instead of the banner section. I don't know what other steps to take. Any advice would be greatly appreciated.
function openNav() {
document.getElementById("main-nav").style.height = "100%";
}
function closeNav() {
document.getElementById("main-nav").style.height = "0%";
}
/*Nav*/
header {
background-color: transparent;
}
.overlay {
height: 0%;
width: 100%;
position: fixed;
z-index: 1;
top: 0;
left: 0;
background-color: #567E3A;
overflow-y: hidden;
transition: 0.5s;
}
.overlay-content {
position: relative;
top: 25%;
width: 100%;
text-align: center;
margin-top: 30px;
}
.overlay a {
padding: 8px;
text-decoration: none;
font-size: 36px;
color: #fff;
display: block;
transition: 0.3s;
}
.overlay a:hover,
.overlay a:focus {
color: #7F8C8D;
}
.overlay .closebtn {
position: absolute;
top: 20px;
right: 45px;
font-size: 60px;
}
.burger {
font-size: 2em;
cursor: pointer;
}
/*Banner*/
#banner {
background-image: url("http://res.cloudinary.com/dboauovcs/image/upload/c_scale,w_2000/v1521182602/camp3_xhp0d9.jpg");
background-repeat: no-repeat;
background-size: cover;
background-position: center;
height: 100vh;
width: 100%;
display: grid;
}
.banner-text {
margin: auto;
text-align: center;
color: #fff;
}
.banner-text h1 {
margin: 2em 1.4em 1.4em 1.4em;
font-size: 2em;
line-height: 1.8;
color: #fff;
text-shadow: 3px 3px #000;
}
<header>
<nav id="main-nav" class="overlay">
×
<div class="overlay-content">
Destinations
Accomidation
Stories
Contact
</div>
</nav>
<span class="burger" onclick="openNav()">☰</span>
</header>
<section id="banner">
<div class="banner-text">
<h1>Lorem Lipsum</h1>
Book Today
</div>
</section>

Like this?
function openNav() {
document.getElementById("main-nav").style.height = "100%";
}
function closeNav() {
document.getElementById("main-nav").style.height = "0%";
}
/*Nav*/
header {
background-color: transparent;
}
.overlay {
height: 0%;
width: 100%;
position: fixed;
z-index: 1;
top: 0;
left: 0;
background-color: #567E3A;
overflow-y: hidden;
transition: 0.5s;
}
.overlay-content {
position: relative;
top: 25%;
width: 100%;
text-align: center;
margin-top: 30px;
}
.overlay a {
padding: 8px;
text-decoration: none;
font-size: 36px;
color: #fff;
display: block;
transition: 0.3s;
}
.overlay a:hover,
.overlay a:focus {
color: #7F8C8D;
}
.overlay .closebtn {
position: absolute;
top: 20px;
right: 45px;
font-size: 60px;
}
.burger {
font-size: 2em;
cursor: pointer;
position: absolute;
}
/*Banner*/
#banner {
background-image: url("http://res.cloudinary.com/dboauovcs/image/upload/c_scale,w_2000/v1521182602/camp3_xhp0d9.jpg");
background-repeat: no-repeat;
background-size: cover;
background-position: center;
height: 100vh;
width: 100%;
display: grid;
}
.banner-text {
margin: auto;
text-align: center;
color: #fff;
}
.banner-text h1 {
margin: 2em 1.4em 1.4em 1.4em;
font-size: 2em;
line-height: 1.8;
color: #fff;
text-shadow: 3px 3px #000;
}
<header>
<nav id="main-nav" class="overlay">
×
<div class="overlay-content">
Destinations
Accomidation
Stories
Contact
</div>
</nav>
<span class="burger" onclick="openNav()">☰</span>
</header>
<section id="banner">
<div class="banner-text">
<h1>Lorem Lipsum</h1>
Book Today
</div>
</section>
A little explanation on what I've done here (presuming this is the treatment you are looking for): By positioning the hamburger as absolute, we pull it completely out of the static layout flow, so other elements ignore its existence when positioning. The element's location can then be controlled with left, right, top and bottom, and will position itself relative to the first ancestor element positioned absolutely, or the body if no element is positioned absolutely. You'll probably want to consider dialing in the positioning a bit with these attributes, as you might not want to rely on the browser to calculate its position with defaults.

function openNav() {
document.getElementById("main-nav").style.height = "100%";
}
function closeNav() {
document.getElementById("main-nav").style.height = "0%";
}
/*Nav*/
header {
background-color: transparent;
position: absolute;
}
.overlay {
height: 0%;
width: 100%;
position: fixed;
z-index: 1;
top: 0;
left: 0;
background-color: #567E3A;
overflow-y: hidden;
transition: 0.5s;
}
.overlay-content {
position: relative;
top: 25%;
width: 100%;
text-align: center;
margin-top: 30px;
}
.overlay a {
padding: 8px;
text-decoration: none;
font-size: 36px;
color: #fff;
display: block;
transition: 0.3s;
}
.overlay a:hover,
.overlay a:focus {
color: #7F8C8D;
}
.overlay .closebtn {
position: absolute;
top: 20px;
right: 45px;
font-size: 60px;
}
.burger {
font-size: 2em;
cursor: pointer;
}
/*Banner*/
#banner {
background-image: url("http://res.cloudinary.com/dboauovcs/image/upload/c_scale,w_2000/v1521182602/camp3_xhp0d9.jpg");
background-repeat: no-repeat;
background-size: cover;
background-position: center;
height: 100vh;
width: 100%;
display: grid;
}
.banner-text {
margin: auto;
text-align: center;
color: #fff;
}
.banner-text h1 {
margin: 2em 1.4em 1.4em 1.4em;
font-size: 2em;
line-height: 1.8;
color: #fff;
text-shadow: 3px 3px #000;
}
<header>
<nav id="main-nav" class="overlay">
×
<div class="overlay-content">
Destinations
Accomidation
Stories
Contact
</div>
</nav>
<span class="burger" onclick="openNav()">☰</span>
</header>
<section id="banner">
<div class="banner-text">
<h1>Lorem Lipsum</h1>
Book Today
</div>
</section>

Resized navbar hides the website content

I am currently creating a website that is vertically scroll-able and has a navbar on the top as shown in the image. The navbar gets bigger when the user is not on the very top and this is implemented as:
if (window.scrollY == nav.offsetTop) {
document.querySelector('.nav').classList.add("largerNavbar");
} else {
document.querySelector('.nav').classList.remove("largerNavbar");
}
In javascript, so, it just adds a new class that has larger height to the navbar. But the problem is, it hides the content of the 2nd row. The 2nd row's style looks like:
div#firstRow {
padding: 10px;
width: 100%;
//position: relative;
margin:0 auto;
line-height: 1.4em;
background-color: green;
}
I commented out the position: relative because then the 2nd row will hide the navbar.
What is the problem here?
EDIT:
$font-stack: Helvetica, sans-serif;
$primary-color: #333;
body {
height: 100%;
font: 100% $font-stack;
color: $primary-color;
margin: 0px;
.largerNavbar .nav{
font-size: 20px;
height: 90px;
}
.largerNavbar #firstRow {
font-size: 20px;
height: 90px;
}
.onSection {
background-color: gray;
}
.nav{
color: white;
//vertical center
display: flex;
align-items: center;
font-size: 12px;
height: 70px;
overflow: hidden;
background-color: #333;
transition:all 1s;
-webkit-transition:all 1s;
.menus {
position: absolute;
right: 0px;
padding: 10px;
}
.logo {
position: absolute;
left: 0px;
padding: 10px;
}
}
.stationary {
position: fixed;
top: 0;
width: 100%;
}
.nav a {
color: white;
float: left;
display: block;
text-align: center;
padding: 14px;
text-decoration: none;
}
div#firstRow {
padding: 10px;
width: 100%;
//position: relative;
margin:0 auto;
line-height: 1.4em;
background-color: green;
}
div#secondRow {
padding: 10px;
//position: relative;
margin:0 auto;
line-height: 1.4em;
background-color: blue;
}
div#thirdRow {
padding: 10px;
//position: relative;
margin:0 auto;
line-height: 1.4em;
background-color: yellow;
}
div#lastRow {
height: 100px;
background-color: black;
}
}
<div class="logo">
HOME
</div>
<div class="menus">
<span>About</span>
<span>Archive</span>
<span>Projects</span>
<span>Contact</span>
</div>
</div>
<div id="firstRow">
<a id="about" class="smooth"></a>
</div>
<div id="secondRow">
<a id="history"></a>
</div>
<div id="thirdRow">
<a id="contact"></a>
</div>
<div id="fourthRow">
<a id="contact"></a>
</div>
<div id="lastRow">
<a id="footer"></a>
footer goes here
</div>
<script src="bundle.js" type="text/javascript"></script>

I'm guessing that you gave the navbar either absolute or fixed positioning.
If that's the case, I would try adding that largerNavbar class to an element that is a parent to both your navbar and your green container there, and then have some CSS selectors that alter both the navbar's height property and the green container's padding-top property at the same time.
So something like this:
.largerNavbar .nav {
...
height: 120px; // Use the same height for both
}
.largerNavbar #firstRow {
...
padding-top: 120px // Use the same height for both
}
Add some CSS transitions and it should look great. Good luck!