help whit a come pls??

[Eric]

Your web design doesn't contain any header elements (i.e. <h1>, <h2>, etc...). Search engines use header elements to determine the context and purpose of your web page. Headers provide semantic structure and meaning to web pages, and search engines, like Google, give preferential treatment to web design that use headers properly.

Could someone give me a exemple of the code there talking about?
and where should i put it?

[bristweb]

http://www.w3schools.com/tags/tag_hn.asp