responsive menu code example

Example 1: css responsive navigation

#header{
position:fixed;
z-index:1000;
left:0;
top:0;
width:100vw;
height:auto;
}

#header .header{
min-height:8vh;
background-color: rgba(0,0,0,0.3);
}

#header .nav-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  width:100%;
  height:100%;
  max-width:1300px;
  padding:0 10px;
}

#header .nav-list ul{
  list-style:none;
  position:absolute;
  background-color:rgb(31,30,30);
  width:100vw;
  height:100vh;
  left:0;
  top:0;
  display:flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  z-index:1;
  overflow-x:hidden;
}

#header .nav-list ul a{
  font-size:2.5rem;
  font-weight:500;
  letter-spacing: .2rem;
  text-decoration:none;
  color:white;
  text-transform:uppercase;
  padding:20px;
  display:block;
  
  
}

Example 2: menu css responsive

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<style>
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
}

.topnav {
  overflow: hidden;
  background-color: #333;
}

.topnav a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

.topnav a:hover {
  background-color: #ddd;
  color: black;
}

.topnav a.active {
  background-color: #4CAF50;
  color: white;
}

.topnav .icon {
  display: none;
}

@media screen and (max-width: 600px) {
  .topnav a:not(:first-child) {display: none;}
  .topnav a.icon {
    float: right;
    display: block;
  }
}

@media screen and (max-width: 600px) {
  .topnav.responsive {position: relative;}
  .topnav.responsive .icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  .topnav.responsive a {
    float: none;
    display: block;
    text-align: left;
  }
}
</style>
</head>
<body>

<div class="topnav" id="myTopnav">
  <a href="#home" class="active">Home</a>
  <a href="#news">News</a>
  <a href="#contact">Contact</a>
  <a href="#about">About</a>
  <a href="javascript:void(0);" class="icon" onclick="myFunction()">
    <i class="fa fa-bars"></i>
  </a>
</div>

<div style="padding-left:16px">
  <h2>Responsive Topnav Example</h2>
  <p>Resize the browser window to see how it works.</p>
</div>

<script>
function myFunction() {
  var x = document.getElementById("myTopnav");
  if (x.className === "topnav") {
    x.className += " responsive";
  } else {
    x.className = "topnav";
  }
}
</script>

</body>
</html>

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