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