box-sizing example

by borayeris

HTML

<div id="a">test</div>
<div id="b">test</div>
<div id="c">test</div>

CSS

div {
    border: 1px solid black;
    width: 150px;
    height: 50px;
}
#b,#c {padding: 10px;}
#b {box-sizing: border-box;}