- Use consistent indentation, such as two or four spaces, for nested elements.

- Separate block-level elements with new lines to improve readability.

- Use lowercase for all HTML element and attribute names.

- Use lowercase or kebab-case for class and ID names (`my-class` or `my-id`).

- Use descriptive names for classes, IDs, and other attributes to improve code comprehension.

- Use meaningful names that convey the purpose or content of the element.

- Include comments to explain complex code, provide context, or document important details.

- Use clear and concise comments that are easy to understand.

- Use double quotation marks (`"`) for attribute values.

- Only use single quotation marks (`'`) within attribute values if necessary.

- For void elements (e.g., `<img>`, `<br>`, `<input>`), use self-closing syntax (`<img src="image.jpg" alt="Image">`).

- Structure your HTML code in a logical and organized manner, with appropriate nesting and indentation.

- Use external CSS files rather than inline styles whenever possible.

- Follow accessibility guidelines and use appropriate HTML elements to enhance accessibility.

- Include alt attributes for images and provide alternative text descriptions.

- Maintain consistent code formatting, naming conventions, and indentation throughout the project.

- Follow the established style guide for the project or team.

- Ensure your HTML code adheres to the HTML standards and validate it using tools like the W3C Markup Validation Service.