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