Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

CSS

Posted by vamosrope14
vamosrope14
14,932 Points

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

.

1 Answer

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 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.

vamosrope14
vamosrope14
14,932 Points

.

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

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