HTML Series Tutorials-headings, horizontal lines, notes, and paragraphs

HTML title
Title, the text used to show the importance of the article, contains the subject matter of the article, similar to the topic of composition.
The title (Heading) is defined by labels such as

Attention:
The browser automatically adds a blank line to the front and back of the title
The cable engine uses headings to index the structure and content of your Web pages

HTML Horizontal Line


HTML annotations
<!--This is a comment--
The HTML comment is preceded by the opening parenthesis (the left parenthesis), which consists of an exclamation mark immediately preceding the closing parenthesis (the right parenthesis). The contents of the note can be placed inside.

HTML Paragraph
The paragraph is defined by the <p> tag, and the browser automatically adds a blank line to the paragraph before and after it.
<p> This is a paragraph </p>

Note:
<p> and <br/> can be used to break lines, but the P tag is more spaced when it is folded, because P is a block element.
When a page is displayed, the browser removes extra spaces and blank lines from the source code. All contiguous spaces or blank lines are counted as a single space. Note that all consecutive empty lines (line breaks) in the HTML code are also displayed as a single space.

HTML Series Tutorials-headings, horizontal lines, notes, and paragraphs