<div class="container">
<div class="col-lg-4 col-md-6">
<div class="input-group mb-3" id="newsletter">
<input type="text" class="form-control" placeholder="Enter your email address" aria-label="Recipient's username" aria-describedby="subscribe">
<div class="input-group-append input-group-btn">
<button class="btn btn-primary" id="subscribe" type="submit"><i class="fa fa-angle-right"></i></button>
</div>
</div>
</div>
</div>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
<style>
#newsletter {
margin-top: 50px; }
#newsletter .input-group {
display: block; }
#newsletter .form-control {
height: 42px;
padding-right: 55px;
border-radius: 3px;
display: block;
float: none; }
#newsletter .input-group-btn {
position: absolute;
right: 0;
top: 5px;
bottom: 5px;
padding: 0 5px;
border-left: 1px solid #e2e4e8;
display: block;
width: 49px;
height: 32px;
z-index: 99; }
#newsletter .input-group-btn .btn {
width: 38px;
height: 32px;
line-height: 20px;
padding: 0;
text-align: center;
font-size: 24px;
margin: 0;
border-radius: 3px; }
</style>
