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