header {Code here } If it is not present, add it to the CSS file, but ensure to use the same "id" name that is used within the HTML. References. ... The HTML Code for Nested Lists.

Many Tumblr themes have a header or banner setting already enabled. You. Chron Logo Hearst ... you can also upload a header to a third-party hosting location and insert the image using HTML code.

John Mueller from Google advises placing JavaScript code underneath the HTML element to ensure that search engines can clearly understand your website.