Tag <h> is used to create heading content, with decreasing size from 1 to 6.
<h1>: This is the highest level heading tag in HTML. It is used to specify the main heading of the webpage.
<h2>: This is a level two heading tag. It is used to classify and group sections of the webpage.
<h3>: Level three heading tag, often used to divide sub-sections within a section that has been grouped by the <h2> tag.
<h4>, <h5>, and <h6>: These are lower-level heading tags. They are often used to group sub-content within sections that have been grouped by higher-level heading tags.
When using heading tags, remember that they also carry semantic meaning. Arrange them in a logical and meaningful way to help readers understand the structure of the webpage.