Scan through the CSS code and and locate the section governing the header. It begins with a hash symbol, and will look like this: Add some CSS code to position the header.

Locate the "header wrapper" section in the HTML code. It will look like this: /some code/ Add the HTML marquee tag. This tag will cause the information in the header wrapper to scroll.

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