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