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