Set width: full 320 768 1024 1920 custom
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Simple Hamburger Menu</title>
<meta name="description" content="A simple responsive hamgurger menu">
<style>
*, *::before, *::after {
box-sizing: border-box;
}
body {
font-family: Arial, sans-serif;
margin: 0;
padding: 0;
}
header {
background: #444;
color: #fff;
display: flex;
align-items: center;
padding: 1em;
}
header h1 {
font-size: 1.8em;
margin: 0 2rem 0 0;
}
input[type="checkbox"] {
display: none;
}
label {
cursor: pointer;
display: block;
text-align: center;
font-size: 24px;
margin-left: auto;
}
nav {
display: none;
position: absolute;
right: 0;
top: 4em;
background: #444;
}
nav ul {
list-style-type: none;
margin: 0;
padding: 0;
display: flex;
flex-direction: column;
}
nav ul li a {
color: #fff;
display: block;
font-size: 1.4em;
padding: 1rem 2rem;
text-align: center;
text-decoration: none;
}
nav ul li a:hover {
background: #777;
}
#menu-toggle:checked + label + nav {
display: block;
}
@media (min-width: 768px) {
nav {
position: static;
display: block;
}
nav ul {
flex-direction: row;
}
nav ul li a {
font-size: 1.1em;
}
label {
display: none;
}
}
</style>
</head>
<body>
<header>
<h1>LOGO</h1>
<input type="checkbox" id="menu-toggle">
<label for="menu-toggle">☰</label>
<nav>
<ul>
<li><a href="#">Home</a></li>
<li><a href="#">About</a></li>
<li><a href="#">Services</a></li>
<li><a href="#">Contact</a></li>
</ul>
</nav>
</header>
</body>
</html>