.triangle{left:0;position:absolute;top:100px;z-index:1}.triangle-right{position:absolute;right:0;top:-100px}.ribbon{left:0;top:100px}.ribbon,.ribbon-right{position:absolute;z-index:1}.ribbon-right{right:0;top:-100px}.signup-ribbon{left:0;position:absolute;top:-40%;z-index:0}.dark-bg{background:#090909}