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