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