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