HTML5 Notes For Professionals

HTML5 Notes For Professionals.

This HTML5 Notes for Professionals book is compiled from Stack Overflow. Documentat , the content is written by the beautiful people at Stack Overflow. Text content is released under Creative Commons BY-SA, see credits at the end of this book whom contributed to the various chapters. Images may be copyright of their respective owners unless otherwise specified.
This is an unofficial free book created for educational purposes and is not affiliated with official HTML5 group(s) or company(s) nor Stack Overflow. All trademarks and registered trademarks are the property of their respective company owners.



Using Headings.

Headings can be used to describe the topic they precede and they are defined with the <h1> to <h6> tags. Headings support all the global attributes.
• <h1> defines the most important heading.
• <h6> defines the least important heading.
Defining a heading:
<h1>Heading 1</h1>
<h2>Heading 2</h2>
<h3>Heading 3</h3>
<h4>Heading 4</h4>
<h5>Heading 5</h5>
<h6>Heading 6</h6>
Correct structure matters
Search engines and other user agents usually index page content based on heading elements, for example to create a table of contents, so using the correct structure for headings is important.
In general, an article should have one h1 element for the main title followed by h2 subtitles - going down a layer if necessary. If there are h1 elements on a higher level they shoudn't be used to describe any lower level content.




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