Until recently, my website was following proper semantic standards with H1 tags before H2 and H3 tags.
Now, on my site I was asked to put an advertisement of a festival for the owner at the top of the page before any page content.
The advertisement itself coding wise contains a DIV tag and in that contains an H3 tag for a title and paragraphs of text and an image, but the advertisement has no relation to the site.
The coding in rough form for the advertisement looks like this:
<div><h3>Advertisement title</h3><p>Advertisement detailed text information</p></div>
And the site coding in rough form excluding the head section of html and body tags looks like this:
<h1>Title of page</h1><h2>Subtitle</h2><p>Main page content</p>
But when I add the advertisement at the top of the page as requested by the owner, the sample code on my page looks something like this:
<div><h3>Advertisement title</h3><p>Advertisement detailed text information</p></div>
<h1>Title of page</h1><h2>Subtitle</h2><p>Main page content</p>
This in turn violates standards as H3 precedes H1 and H2.
How could I best solve this in a standard way while still giving some emphasis to the advertisement? I was thinking replacing the H3 tag with a P tag and styling it but I'm not sure if that is sufficient to meet standards such as google's (or any other search engines) webmaster quality guidelines.