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