Container with down arrow

by prasun_sultania

HTML

<br />
<div class="container">
Test Container
</div>

CSS

.container {
    margin-left: 15px;
    width: 200px;    
    height: 100px;
    border: 1px solid #CAD5E0;
    padding: 4px;
    position: relative;    
    color: white;        
    background-color: black;
}

.container:after {
content: '';
display: block;
position: absolute;
top: 100%;
left: 10px;
width: 0;
height: 0;
border-color: black transparent transparent transparent;
border-style: solid;
border-width: 10px;
}