<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
*,*:before,*:after {
padding: 0;
margin: 0;
box-sizing: border-box;
}
body{
background: #333;
}
.wrap {
width: 300px;
height: 300px;
margin: auto;
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
}
.wrap .search{
width: 80px;
height: 80px;
margin: auto;
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
background: red;
border-radius: 50%;
box-shadow: 0 0 20px;
transition: all 1.5s;
}
.wrap .search:before{
content: '';
width: 30px;
height: 30px;
margin: auto;
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
border-radius: 50%;
border: 2px solid white;
}
.wrap .search:after{
content: '';
width: 10px;
height: 2px;
margin: auto;
position: absolute;
top: 0;
right: -30px;
bottom: -30px;
left: 0;
transform: rotate(45deg);
background: white;
}
.wrap input{
width: 300px;
height: 50px;
margin: auto;
position: absolute;
z-index: 2;
top: 0;
right: 0;
bottom: 0;
left: 0;
border: 2px solid orange;
background: #333;
color: white;
transition: all 1.5s;
padding: 0 10px;
outline: none;
opacity: 0;
}
.wrap input:focus{
opacity: 1;
width: 300px;
}
.wrap input:focus ~ .search{
z-index: 3;
right: -360px;
}
.wrap input:focus ~ .search:before{
content: '';
width: 30px;
height: 2px;
margin: auto;
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
background: white;
transform: rotate(45deg);
border: none;
border-radius: 0;
}
.wrap input:focus ~ .search:after{
content: '';
width: 30px;
height: 2px;
margin: auto;
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
background: white;
transform: rotate(-45deg);
}
</style>
</head>
<body>
<div class="wrap">
<input type="text" placeholder="Search...">
<div class="search"></div>
</div>
</body>
</html>
