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