responsive hamburger menu code example

Example 1: burger menu css

/* Link to Codepen in source for PoC */

<style>
.container {
  background: dodgerblue;
  padding: 20px;
  height: 70px;
}

#hamburger {
  width: 40px;
  height: 40px;
  display: block;
  position: relative;
  float: right;
  transform: rotate(0deg);
  transition: .5s ease-in-out;
  cursor: pointer;
}
#hamburger span {
  display: block;
  position: absolute;
  height: 4px;
  width: 100%;
  background: white;
  border-radius: 9px;
  opacity: 1;
  left: 0;
  transform: rotate(0deg);
  transition: .25s ease-in-out;
}
#hamburger span:nth-child(1) {
  top: 0px;
}
#hamburger span:nth-child(2) {
  top: 12px;
}
#hamburger span:nth-child(3) {
  top: 24px;
}
#hamburger.open span:nth-child(1) {
  top: 14px;
  transform: rotate(135deg);
}
#hamburger.open span:nth-child(2) {
  opacity: 0;
  left: -60px;
}
#hamburger.open span:nth-child(3) {
  top: 14px;
  transform: rotate(-135deg);
}

</style>
<body>
  <div class="container">
       <div id="hamburger">
          <span></span>
          <span></span>
          <span></span>
      </div> 
  </div>
</body>

Example 2: 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;
  
  
}

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