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