The main purpose of the HTML5 <thead> tag is to put all header content within the HTML document in a single group. The HTML5 <thead> tag is utilized along with the <tbody> and <tfoot> tags. Using these three together is the key in completing the header, footer and body within a document.

Specifying the HTML5 <thead> tag is necessary so that when users access the web page, the body can be scrolled while the header and footer remain in place. Aside from that, it is also the key in ensuring that when the content is printed out, the header and footer remain in place even if multiple pages have to be done.

The HTML5 <thead> tag is used the same way that it is utilized in HTML4.01. Hence, that author does not have to be concerned with much changes.

To make things easier, the HTML5 <thead> tag is also supportive of the Global Attributes in HTML5. It is also harmonious with the functions of the Event Attributes in HTML5. To top it all off, the HTML5 <thead> tag is not complicated to include within an HTML document because web browsers like Google Chrome, Internet Explorer, Safari, Firefox and Opera accept it.

Below is the clarification for the attributes of HTML5 <thead> tag: