JSFiddle - React, Tailwind, and code Playground
by fangyang
HTML
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
<div class="col-md-12 form-group">
<div class="has-feedback has-error">
<label for="email">E-mail</label>
<div class="input-group">
<span class="input-group-addon">@</span>
<input type="email" name="email" required="" placeholder="e-mail" class="form-control" />
</div>
<span class="glyphicon glyphicon-remove form-control-feedback"></span>
</div>
</div>
<div class="col-md-12">
<div class="has-feedback has-error">
<label for="email">E-mail with z-index</label>
<div class="input-group">
<span class="input-group-addon">@</span>
<input type="email" name="email" required="" placeholder="email" class="form-control" />
</div>
<span class="glyphicon glyphicon-remove form-control-feedback icon"></span>
</div>
</div>
CSS
.icon
{
z-index: 2;
}