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