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