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HTML Style Guide

An HTML Style Guide is a set of guidelines and best practices for writing HTML code. It provides recommendations on how to format and structure HTML documents to ensure consistency, readability, and maintainability. A style guide helps developers and teams establish a common set of conventions, making it easier to collaborate on projects.

Here are some common elements that an HTML Style Guide might cover:

Indentation and Formatting: Guidelines for how to structure and format HTML code, including rules for indentation, line breaks, and spacing.

Naming Conventions: Consistent naming conventions for HTML elements, classes, IDs, and attributes to improve code readability and maintainability.

Comments: Recommendations for adding comments to HTML code to explain complex sections, provide context, or document the purpose of certain elements.

HTML Document Structure: Guidelines for organizing the structure of an HTML document, including the use of doctype declaration, head, body, and other essential elements.

Attribute Order: Recommendations for the order of attributes within HTML tags to maintain consistency.

Use of Quotes: Consistent use of single or double quotes for attribute values.

Boolean Attributes: Guidelines for handling boolean attributes like <b>checked</b>, <b>disabled</b>, and <b>readonly</b>.

Self-Closing Tags: Guidance on when to use self-closing tags (e.g., <img />, <br />) and when to use separate opening and closing tags.

HTML5 Semantic Elements: Encouragement to use semantic HTML5 elements like <header>, <nav>, <section>, <article>, <footer>, etc., for better document structure and accessibility.

Deprecated Elements: Avoidance of deprecated HTML elements and attributes.

Accessibility: Recommendations for creating accessible HTML code, including the use of ARIA roles and attributes.

Encoding: Guidelines for specifying character encoding in HTML documents.

Encoding: Guidelines for specifying character encoding in HTML documents.

Always Declare Document Type

Yes, it is generally recommended to always declare the document type in HTML documents. The document type declaration, often referred to as the "doctype," informs the web browser about the version of HTML or XHTML that is being used in the document. It helps the browser to interpret the document correctly and render it as intended.

The doctype declaration is typically placed at the very beginning of an HTML document, before the tag. Here's an example of a doctype declaration for HTML5:

Example

            
<!DOCTYPE html>
<html>
  <!-- Rest of the HTML document goes here -->
</html>
You can click on above box to edit the code and run again.

Output