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