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