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