Element block pseudo-class :active generated with background box-sizing content-box border 0px rgba(0,0,0,1) solid transition box-shadow 1px 1px 1px rgba(0,0,0,0.3) padding 20px float none transform line-height 1 z-index auto height auto margin 0px width 160px overflow hidden border-radius cursor default position static display block font-weight normal font-size 16px text-shadow 1px 1px 1px rgba(0,0,0,0.2)