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