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