Element block pseudo-class :active generated with line-height 1 background padding 20px margin 0px border 0px rgba(0,0,0,1) solid text-shadow 1px 1px 1px rgba(0,0,0,0.2) cursor default font-weight normal position static float none height auto width 50px font-size 16px box-shadow 1px 1px 1px rgba(0,0,0,0.3) border-radius transform display block overflow hidden transition box-sizing content-box z-index auto