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