Explanation

html provide 6 levels of heading tag:

• <h1>: Defines the highest level heading.
• <h2>: Defines a second-level heading.
• <h3>: Defines a third-level heading.
• <h4>: Defines a fourth-level heading.
• <h5>: Defines a fifth-level heading.
• <h6>: Defines the lowest level heading.