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