.rect-card:after,.rect-card:before{content:"";position:absolute}.rect-card{background-color:#fff;border:3px solid #000;padding:20px 35px;display:inline-block;top:50%;left:50%;transform:translate(0%)}.rect-card:before{background-color:#000;border:3px solid #000;width:calc(100% + 6px);height:15px;bottom:-17.5px;right:4.4px;transform:skew(-45deg)}.rect-card:after{background-color:#000;border:3px solid #000;width:15px;height:calc(100% + 5px);bottom:-10px;left:-17.5px;transform:skewY(-45deg)}