Footer<\/div>\n<\/body>\n<\/html><\/pre>

This uses div<\/code> elements to represent different sections: header, navbar, main (which includes sidebar and content), and footer. <\/p>

---

2. Style the Layout with CSS<\/h3>

Now, create a styles.css<\/code> file to make the layout visually structured.<\/p>

 * {\n  margin: 0;\n  padding: 0;\n  box-sizing: border-box;\n}\n\nbody {\n  font-family: Arial, sans-serif;\n}\n\n.header {\n  background-color: #4CAF50;\n  color: white;\n  text-align: center;\n  padding: 20px;\n}\n\n.navbar {\n  background-color: #333;\n  color: white;\n  padding: 10px;\n  text-align: center;\n}\n\n.main {\n  display: flex;\n  min-height: 60vh;\n}\n\n.sidebar {\n  background-color: #f4f4f4;\n  width: 200px;\n  padding: 20px;\n}\n\n.content {\n  flex: 1;\n  padding: 20px;\n}\n\n.footer {\n  background-color: #333;\n  color: white;\n  text-align: center;\n  padding: 15px;\n}<\/pre>
 Key CSS Concepts Used:<\/h4>
 display: flex<\/code><\/strong> on .main<\/code> lets the sidebar and content sit side by side.<\/li>
 flex: 1<\/code><\/strong> on .content<\/code> makes it take up remaining space.<\/li>
 box-sizing: border-box<\/code><\/strong> ensures padding doesn't break layout widths.<\/li>
 min-height: 60vh<\/code><\/strong> prevents the main section from collapse when content is short.<\/li><\/ul>
 3. Responsive Adjustment (Optional)<\/h3>
 Make it mobile-friendly by stacking sidebar and content on smaller screens: <\/p>
 @media (max-width: 768px) {\n  .main {\n    flex-direction: column;\n  }\n  .sidebar {\n    width: 100%;\n  }\n}<\/pre>
 This changes the layout to vertical when the screen is narrow.<\/p>\n
\n
 Final Notes<\/h3>\n
\n
 You don't need complex tools to create a clean layout.<\/li>\n
 Use semantic HTML ( 
<\/header><\/code> ,