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