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