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