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