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