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