body{font-family:Arial,sans-serif}#calendar{margin:20px}.calendar-header{background-color:#f3f3f3;border-bottom:2px solid #000;display:grid;grid-template-columns:repeat(7,1fr);padding:10px;text-align:center}.date{border:1px solid #000;font-weight:700;padding:10px}.deal-row{display:grid;grid-template-columns:repeat(7,1fr);margin-top:10px}.deal-cell{border:1px solid #000;min-height:50px;padding:10px;text-align:center}.deal{background-color:green;border-radius:4px;color:#fff;padding:5px}