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