Given HTML and CSS’ inherently interconnected nature, it would be remiss of me to not cover some syntax and formatting guidelines for markup. Always quote ...

Let’s first familiarize ourselves with CSS rulesets terminology: : ; } For example: .foo, .foo--bar, .baz { display: block; ...

I like to stress that no rules are unbreakable. There will always be exceptions, there will always be a situation which requires a rule to be bent, there will ...

There’s an old rule of thumb which states that mixins without arguments are bad—that mixins which just duplicate code with no difference between each instance ...

/* ----------- Galaxy S3 ----------- */ /* Portrait and Landscape */ @media screen and (device-width: 360px) and (device-height: 640px) and ...