body {
     font-family: Arial, sans-serif;
     background: #f9f9f9; 
 }

 h1 {
     text-align: center;
     color: #333;
 }

 .notice-card {
     background: #fff;
     border: 1px solid #ccc;
     border-radius: 8px;
     padding: 15px;
     margin: 20px auto;
     max-width: 800px;
     box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
 }

 .notice-card h3 {
     margin: 0 0 10px;
     color: #0056b3;
 }

 .notice-card small {
     color: #555;
 }

 .notice-card a {
     display: inline-block;
     margin-top: 10px;
     text-decoration: none;
     color: #007bff;
 }

 .notice-card a:hover {
     text-decoration: underline;
 }

 embed {
     border: 1px solid #ccc;
     border-radius: 5px;
     margin-top: 10px;
 }