body {
   font-family: Arial, sans-serif;
   max-width: 1500px;
   margin: 0 auto;
   padding: 20px;
 }
 
 .demo-section {
   border: 1px solid #ddd;
   padding: 15px;
   margin-bottom: 30px;
   border-radius: 5px;
 }
 
 .section-content {
   display: flex;
   gap: 20px;
   padding: 10px;
 }
 
 .section-demo {
   flex: 0 0 40%;
   min-width: 300px;
 }
 
 .section-code {
   flex: 0 0 60%;
   min-width: 400px;
   overflow: hidden;
 }
 
 .code-container {
   position: relative;
   background: #1e1e1e;
   border-radius: 5px;
   border: 1px solid #555;
   margin-bottom: 15px;
   color: #f8f8f8;
   height: 100%;
   max-width: 100%;
   overflow-x: auto;
 }
 
 .code-header {
   background: #333;
   padding: 8px;
   display: flex;
   justify-content: space-between;
   align-items: center;
   border-bottom: 1px solid #555;
 }
 
 .code-label {
   font-weight: bold;
   font-family: monospace;
   color: #f8f8f8;
 }
 
 .copy-btn {
   background: #007bff;
   color: white;
   border: none;
   border-radius: 3px;
   padding: 4px 8px;
   font-size: 12px;
   cursor: pointer;
 }
 
 .copy-btn:hover {
   background: #0069d9;
 }
 
 pre {
   margin: 0;
   padding: 10px;
   font-family: monospace;
   font-size: 12px;
   tab-size: 2;
 }
 
 /* Demo styling */
 .bold { font-weight: bold; }
 .blue { color: blue; }
 .card {
   border: 1px solid #ccc;
   border-radius: 8px;
   padding: 10px;
   margin: 10px 0;
   background-color: #f9f9f9;
 }
 .highlight { background-color: yellow; }
 .completed {
   text-decoration: line-through;
   color: #888;
 }
 
 button {
   padding: 5px 10px;
   margin: 5px;
   cursor: pointer;
 }
 
 table {
   width: 100%;
   border-collapse: collapse;
 }
 
 table, th, td {
   border: 1px solid #ddd;
 }
 
 th, td {
   padding: 8px;
   text-align: left;
 }
 
 h2 {
   margin-top: 0;
 }