@mixin absolute-cover @mixin pseudo-cover -- use on a :before or :after to cover node To change position of fixed and absolute elements use these classes:

• .t<X>: Changes the top value to X
• .r<X>: Changes the right value to X
• .b<X>: Changes the bottom value to X
• .l<X>: Changes the left value to X
• .absolute-cover: makes element cover its relative parent

X should be in: [0, 4, 8, 16, 32, 64, 128, 256, 512]