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