Element block pseudo-element :after generated with box-sizing content-box overflow hidden z-index auto padding 20px position static font-size 16px display block border 4px rgba(0,0,0,1) solid float none transition width 160px font-weight normal background border-radius text-shadow 1px 1px 1px rgba(0,0,0,0.2) height auto transform margin 0px line-height 1 cursor default box-shadow 4px 5px 8px rgba(0,0,0,0.3)