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