Usually, a banner appears at the top of the page and usually spans the entire width. It depends on the contents of the slider. If it is not important, it should be placed as a section. A banner benchmark role converts the container element it is applied to into a header.
It should be reserved for site header content that is common throughout the site, usually at the top of each page. Where would this code apply? If the header element technique is not used for that banner, a role%3d banner statement must be used to define a banner milestone for assistive technologies. Each page can have a banner benchmark, but each page should be limited to a single banner header. The banner usually includes elements such as a logo or corporate identity, possibly a site-specific search tool, and is usually what your marketing team would call the site's header or top banner.
The banner must extend across the full width of the window, but the content must be within 800 pixels in the center. assistive technologies can identify the main header element of a page as the banner if it is a descendant of the body element and is not nested within an article, separate, main, navigation, or section subsection. I need to put a thin banner at the top of the page like the orange notification banner on this page. Your banner wouldn't belong to the Role%3D “banner box (or it doesn't sound like that), but maybe just below it in a separate div if you like.
The banner function is used to define a global site header, which typically includes a logo, company name, search icon, and possibly a slogan, usually at the top of the page. By default, the HTML5 element has the same meaning as the banner reference, unless it is a descendant of,,, or, at which point the header of that section is and is not the equivalent of the site-wide banner. Since this is the main header of the site, we have added the banner milestone function to the container element.