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