<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN" crossorigin="anonymous">
<div class="container">
<div class="row">
<form class="form" >
<div class="input-group">
<input class="form-control" type="text" placeholder="Search" aria-label="Search" style="padding-left: 20px; border-radius: 40px;" id="mysearch">
<div class="input-group-addon" style="margin-left: -50px; z-index: 3; border-radius: 40px; background-color: transparent; border:none;">
<button class="btn btn-warning btn-sm" type="submit" style="border-radius: 20px;" id="search-btn"><i class="fa fa-search"></i></button>
</div>
</div>
</form>
</div>
</div>
