.corner{pointer-events:none;position:absolute;z-index:4}.corner::after,.corner::before{background:#000;content:"";display:block;position:absolute}.corner::before{height:42px;width:13px}.corner::after{height:13px;width:42px}.corner-small::before{height:24px;width:7px}.corner-small::after{width:24px;height:7px}.corner-topleft{top:0;left:0}.corner-topleft::after,.corner-topleft::before{left:0;top:0}.corner-left{bottom:0;left:0}.corner-left::after,.corner-left::before{bottom:0;left:0}.corner-view{bottom:-30px;right:-30px}.corner-view::before{bottom:0;right:0}.corner-view::after{bottom:0;right:0}.corner-right{right:0;top:0}.corner-right::after,.corner-right::before{right:0;top:0}.corner-red::after,.corner-red::before{background-color:#fe2722}.corner-blue::after,.corner-blue::before{background-color:#004dfd}.corner-yellow::after,.corner-yellow::before{background-color:#f2e800}.corner-white::after,.corner-white::before{background-color:#fff}