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