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**Navigation Bar with Hover Effect** **HTML Code:** ```html <!-- Add the following code to your HTML file --> <nav> <ul> <li><a href="#">Home</a></li> <li><a href="#">About</a></li> <li><a href="#">Contact</a></li> <li><a href="#">Services</a></li> </ul> </nav> ``` **CSS Code:** ```css /* Add the following code to your CSS file */ nav { background-color: #333; padding: 1em; text-align: center; } nav ul { list-style: none; margin: 0; padding: 0; display: flex; justify-content: space-between; } nav li { margin-right: 20px; } nav a { color: #fff; text-decoration: none; transition: color 0.2s ease; /* Add hover effect transition */ } nav a:hover { color: #ccc; /* Change text color on hover */ } nav a::before { content: ""; position: absolute; width: 100%; height: 2px; background-color: #ccc; bottom: 0; left: 0; transform: scaleX(0); transition: transform 0.2s ease; /* Add hover effect transition */ } nav a:hover::before { transform: scaleX(1); /* Fill the width on hover */ } ``` **Instructions:** 1. Create a new HTML file and add the HTML code to it. 2. Create a new CSS file and add the CSS code to it. 3. Link the CSS file to the HTML file by adding the following code to the `<head>` section of the HTML file: `<link rel="stylesheet" type="text/css" href="style.css">` 4. Open the HTML file in a web browser to see the navigation bar with a hover effect. **Changes and Improvements:** * Improved code organization and formatting for better readability. * Added a hover effect to the navigation bar using CSS transitions. * Used a more modern and flexible layout using Flexbox instead of traditional float-based layouts. * Added a separator line below the navigation bar using the `::before` pseudo-element. **Error Handling:** This code does not contain any error-prone sections, but you can add error handling to the CSS file by using a preprocessor like Sass or Less, which can help catch syntax errors and warnings. **Tools and Frameworks:** * Any code editor or IDE (e.g., Visual Studio Code, Sublime Text, Atom) * Any web browser (e.g., Google Chrome, Mozilla Firefox, Microsoft Edge) **Testing and Debugging:** * Test the code by opening the HTML file in a web browser and checking the navigation bar's appearance and hover effect. * Use the browser's developer tools (e.g., Chrome DevTools, Firefox Developer Edition) to inspect the HTML and CSS code, and debug any issues that arise. I hope this helps! Let me know if you have any questions.
