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CSS

What parent element is setting the default width of block-level elements to be equal to the browser width?

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1 Answer

Steven Parker
Steven Parker
229,732 Points

You're quite right. As described on the MDN reference page:

The HTML <html> element represents the root (top-level element) of an HTML document, so it is also referred to as the root element. All other elements must be descendants of this element.

Note that the <body> is one of the few elements that has margins by default, so the width of block elements inside it will be a bit less than that of the root (or browser window). You can, of course, remove the default margins with CSS.

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Steven Parker
Steven Parker
229,732 Points

It sounds like you've got the right idea. Boxes inside boxes.