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