Element block pseudo-class :active generated with width 160px position static border 0px rgba(0,0,0,1) solid box-sizing content-box cursor default box-shadow 1px 1px 1px rgba(0,0,0,0.3) border-radius padding 20px background display block height auto transform line-height 1 transition text-shadow 1px 1px 1px rgba(0,0,0,0.2) float none font-weight normal font-size 16px z-index auto overflow hidden margin -4px