In a 3-column layout that uses floating for page layout, you need to use CSS to a. set the width of the header b. stop any floating in the footer c. set the width of the footer d. stop any floating in the header

D. Stop any floating in the header.

Explanation:

CSS or cascaded style sheet is a web development tool used by a developer to instruct the web browser on how to parse the HTML elements in the web page.

The HTML comprises generally of a header, body and a footer. The header is the introductory element of tag in the HTML file. The body is the main content of the web page while the footer is at the bottom or is the end of the web page.

The floating attribute is to position an element or set the width to a justified size. It can be used to set a header width equal to the container width by gives the value of 'none' to the float attribute.

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