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