Great Little CSS Fix
Anyone who designs websites using CSS inevitably runs into problems with cross-browser compatibility. Firefox and IE are notorious for rendering CSS markup differently.
Take, for example, padding. If you have a <div> tag with a width and padding set, Firefox adds the padding to the width making the entire box larger while IE adds padding while keeping the box the width set in the CSS. While browsing the web today, I happened to come across a great fix that forces Firefox to work the same way as IE with padding: