.corner-border:after,.corner-border:before{position:absolute;width:180px;height:75px;content:""}.corner-border:before{left:0;top:0;border-top-left-radius:12px;border-left-style:solid;border-left-width:4px;border-top-style:solid;border-top-width:4px}.corner-border:after{right:0;bottom:0;border-bottom-right-radius:12px;border-right-style:solid;border-right-width:4px;border-bottom-style:solid;border-bottom-width:4px}