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