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