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