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