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