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