Vertical align anything with just 3 lines of CSS

With just 3 lines of CSS (excluding vendor prefixes) we can with the help of transform: translateY vertically center whatever we want, even if we don’t know its height.

The CSS property transform is usally used for rotating and scaling elements, but with its translateYfunction we can now vertically align elements. Usually this must be done with absolute positioning or setting line-heights, but these require you to either know the height of the element or only works on single-line text etc.

So, to do this we write:

That’s all you need. It is a similar technique to the absolute-position method, but with the upside that we don’t have to set any height on the element or position-property on the parent. It works straight out of the box, even in IE9!

To make it even more simple, we can write it as a mixin, or a placeholder selector, with its vendor prefixes:

Reprinted from http://zerosixthree.se/vertical-align-anything-with-just-3-lines-of-css/