.angoli{position:relative;padding:20px}.angoli::before{content:"";position:absolute;top:0;left:0;width:60px;height:60px;border-top:2px solid #ffffff;border-left:2px solid #ffffff}.angoli::after{content:"";position:absolute;bottom:0;right:0;width:60px;height:60px;border-bottom:2px solid #ffffff;border-right:2px solid #ffffff}