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