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