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