Writing good HTML code is essential for creating well-structured, maintainable, and accessible web pages. Here are some best practices for writing HTML code:

1. Use proper indentation: Indent your code for better readability and maintainability. Properly indented code is also easier to debug.
2. Use lowercase tags and attributes: HTML tags and attributes are case-insensitive, but using lowercase makes your code more consistent and easier to read.
3. Use semantic HTML: Use semantic HTML tags like <header>, <nav>, <section>, <article>, <aside>, and <footer> to provide more meaning to your HTML code.
4. Use alt attributes for images: Always provide a descriptive alt attribute for images. This improves accessibility and helps search engines understand your content.
5. Keep your code clean: Avoid unnecessary code, such as empty tags, and keep your code concise and easy to read.
6. Use CSS for styling: Avoid using inline styles and use CSS for all your styling needs. This helps keep your HTML code clean and separate from your presentation.
7. Validate your HTML: Use an HTML validator to check your code for errors and make sure it conforms to the HTML standard.
8. Use comments to explain your code: Use comments to explain your code and make it easier for others (and yourself) to understand what’s going on.
9. Use proper file names and directory structure: Use descriptive file names and a well-organized directory structure to make it easy to find and maintain your files.
10. Test your code: Test your code in different browsers and devices to make sure it works properly and looks good on all platforms.

By following these best practices, you can write HTML code that is clean, maintainable, and accessible, making it easier for you and others to work with your code and creating a better experience for your users.