<p>A few weeks ago I wrote about the <a href="/2012/traditional-box-model-vs-w3c-box-model/" title="Traditional Box Model vs. W3C Box Model">Traditional Box Model</a> and the ‘box-sizing’ CSS property, which, in essence, allowed you to easily create two adjacent boxes with a width of 50% and any amount of padding, because padding was included in the width. In this article I will talk about a different method of achieving this with the help of the ‘calc()’ expression.</p>