The header tag is used any time we want to give a section of our web page a heading. This could be for the heading to a paragraph, a heading for a list of items, a heading for an entire page, a heading for a table or any other place where a heading might be appropriate.
This is a paragraph tag. It sets off the text between the tags in a paragraph format. In order to actually se what a paragraph tag does, it is necessary to type a couple of sentences which extend for more than one line. Now you will notice how a paragraph tag displays the content between the tags.
When we create a second paragraph other things become apparent. The paragraph tag not only indents the first line. It also includes a blank line after the close of the paragraph tag. Consequently if you have several paragraphs in a document, they will be separated by blank lines.