HTML5 Document

The following tags have been introduced in HTML5 for better structure:

section:
This tag represents a generic document or application section. It can be used together with h1-h6 to indicate the document structure.

article:
This tag represents an independent piece of content of a document, such as a blog entry … Read more

Custom Attributes in HTML5

A new feature being introduced in HTML 5 is the addition of custom data attributes.

A custom data attribute starts with data- and would be named based on your requirement.

Custom Attributes
<div class=”sample” data-subject=”chemistry” data-mark=”10″>

</ div>

The above will be perfectly valid HTML5 with two custom attributes … Read more