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