HTML Documents
All HTML documents must start with a document type declaration: <!DOCTYPE html>
.
The HTML document itself begins with <html>
and ends with </html>
.
The visible part of the HTML document is between <body>
and </body>
.
Example
<!DOCTYPE html><html><body><h1>My First Heading</h1><p>My first paragraph.</p></body></html>
The <!DOCTYPE> Declaration
The <!DOCTYPE>
declaration represents the document type, and helps browsers to display web pages correctly.
It must only appear once, at the top of the page (before any HTML tags).
The <!DOCTYPE>
declaration is not case sensitive.
The <!DOCTYPE>
declaration for HTML5 is:
<!DOCTYPE html>
HTML Headings
HTML headings are defined with the <h1>
to <h6>
tags.
<h1>
defines the most important heading. <h6>
defines the least important heading:
<!DOCTYPE html>
<html>
<body>
<h1>This is heading 1</h1>
<h2>This is heading 2</h2>
<h3>This is heading 3</h3>
<h4>This is heading 4</h4>
<h5>This is heading 5</h5>
<h6>This is heading 6</h6>
</body>
</html>
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