<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>
<!------ Include the above in your HEAD tag ---------->
<div class="container">
<div class="row">
<h2>Create Colorful Input Groups!</h2>
</div>
<div class="row form-group">
<div class="input-group">
<span class="input-group-addon primary"><span class="glyphicon glyphicon-star"></span></span>
<input type="text" class="form-control">
</div>
</div>
<div class="row form-group">
<div class="input-group">
<input type="text" class="form-control">
<span class="input-group-addon success"><span class="glyphicon glyphicon-ok"></span></span>
</div>
</div>
<div class="row form-group">
<div class="input-group">
<span class="input-group-addon info"><span class="glyphicon glyphicon-info-sign"></span></span>
<input type="text" class="form-control">
</div>
</div>
<div class="row form-group">
<div class="input-group">
<input type="text" class="form-control">
<span class="input-group-addon warning"><span class="glyphicon glyphicon-warning-sign"></span></span>
</div>
</div>
<div class="row form-group">
<div class="input-group">
<span class="input-group-addon danger"><span class="glyphicon glyphicon-remove"></span></span>
<input type="text" class="form-control">
</div>
</div>
</div>
.input-group-addon.primary {
color: rgb(255, 255, 255);
background-color: rgb(50, 118, 177);
border-color: rgb(40, 94, 142);
}
.input-group-addon.success {
color: rgb(255, 255, 255);
background-color: rgb(92, 184, 92);
border-color: rgb(76, 174, 76);
}
.input-group-addon.info {
color: rgb(255, 255, 255);
background-color: rgb(57, 179, 215);
border-color: rgb(38, 154, 188);
}
.input-group-addon.warning {
color: rgb(255, 255, 255);
background-color: rgb(240, 173, 78);
border-color: rgb(238, 162, 54);
}
.input-group-addon.danger {
color: rgb(255, 255, 255);
background-color: rgb(217, 83, 79);
border-color: rgb(212, 63, 58);
}