JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<div class="demo">
  <div class="input-group">
    <input type="text" class="form-control" placeholder="Username" aria-describedby="basic-addon1">
    <span class="input-group-addon glyphicon glyphicon-search" aria-hidden="true"></span>
  </div>
</div>

CSS

.demo {
  padding: 50px;
}