Element block pseudo-class :active generated with padding 20px display block line-height 1 transition z-index auto position relative margin 0px cursor default background border 0px rgba(0,0,0,1) solid text-shadow 1px 1px 1px rgba(0,0,0,0.2) overflow hidden transform width 20% font-size 16px font-weight normal float left border-radius height auto box-sizing content-box box-shadow 1px 1px 1px rgba(0,0,0,0.3)