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