HTML CODE:
<!DOCTYPE html>
<html>
<head>
<title>SEARCH BOX</title>
<script defer src="https://use.fontawesome.com/releases/v5.0.6/js/all.js"></script>
<link rel="stylesheet" type="text/css" href="2.page.css">
</head>
<body>
<img src="https://wallpaper-house.com/data/out/5/wallpaper2you_55315.jpg" width="400px" height="1000px">
<div class="search-box">
<input class="search-txt" type="text" name="" placeholder="Type to search...">
<a class="search-btn" href="#">
<i class="fas fa-search"></i>
</a>
</div>
</body>
</html>
CSS CODE:
body{
margin: 0;
padding: 0;
background-color: #e84118;
}
.search-box{
position: absolute;
top: 50%;
left: 50%;
transition: (-50%,-50%);
background-color: #2f3640;
height: 40px;
border-radius: 40px;
padding: 10px
}
.search-box:hover > .search-txt{
width: 240px;
padding: 0 6px;
}
.search-box:hover > .search-btn{
background: white
}
.search-btn{
color: #e84118;
float: right;
width: 40px;
height: 40px;
border-radius: 50%;
background-color: #2f3640;
display: flex;
justify-content: center;
align-items: center;
transition: 0.4s
}
.search-txt{
border:none;
background: none;
outline: none;
float: left;
padding: 0;
color: white;
font-size: 16px;
transition: 0.4s;
line-height: 40px;
width: 0px;
}
TrueCodes 
what is script defer
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