Search Box

index.html

<div class="searchbox" onClick="onClick(event)">
  <input type="text" onFocus="onFocus()" onBlur="onBlur()"/>
  <button>
    <i class="fa fa-search" aria-hidden="true"></i>
  </button>
</div>

script.js

function activateSearchbox(el){
  el.classList.add('searchbox--active')
}
function deactivateSearchbox(el){
  el.classList.remove('searchbox--active')
}

function onFocus(){
  activateSearchbox(document.querySelector('.searchbox'));  
}

function onBlur(){
  deactivateSearchbox(document.querySelector('.searchbox'));  
}

search-box.markdown

Search Box

Search box with 3d on focus effect.

A Pen by Merrick on CodePen.

License.

style.scss

html{
  box-size: border-box;
  background: #2196F3;
}

*, *:before, *:after{
  box-sizing: inherit;
}

*, *:active, *:focus{
  outline: none;
}

$btn-width: 44px;

.searchbox{
  position: relative;
  
  height: 40px;
  width: 400px;
  margin: 50px auto;
  overflow: hidden;
  
  border-bottom: 2px solid #fff;
  background: none;
  color: #fff;
  
  perspective: 1800px;
  perspective-origin: 40% 40%;
  transform-style: preserve-3d;
  
  transition: all 0.4s cubic-bezier(.25, .8, .25, 1);
  &--active{
    color: #000;
  }
  
  &:after{
    position: absolute;  
    content: "";
    // z-index: 1;
    
    width: 100%;
    height: 100%;
    top: 20px;
    left: 0px;
    
    transform: rotateX(90deg);
    background: #fff;
    
    transition: all 0.4s cubic-bezier(.25, .8, .25, 1);
  }
  

  
  &--active:after{
    top: 0px;
    left: 0px;
    
    transform: rotateX(0deg);
  }
  
  input{
    position: absolute;
    z-index: 1;
    
    height: 100%;
    width: 100%;
    
    padding-left: 8px;
    padding-right: $btn-width;
    
    border: none;
    font-size: 1em;
    color: inherit;
    background: none;
  }
  
  button{
    position: absolute;
    z-index: 1;
    
    right: 0px;
    top: 0px;
    height: 100%;
    width: $btn-width;
    
    border: none;
    background: none;
    font-size: 1.4em;
    color: inherit;
  }
}

styles

<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" />