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