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I recently wrote a very basic Sass loop that outputs several padding and margin utility classes. Nothing fancy, really, just a Sass map with 11 spacing values, looped over to create classes for both padding and margin on each side. …

One of my favorite ways of adding icons to a site is by including them as data URL background images to pseudo-elements (e.g. ::after) in my CSS. This technique offers several advantages:

• They don’t require any additional HTTP requests

Say you need to use a certain selector in multiple places in your code. It’s not tremendously common, to be sure, but stuff happens. Repeated code is typically an opportunity for abstraction. Abstracting values in Sass is easy, but selectors …