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