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 CSS Basics (2014) Basic Layout Floats

Does it matter if we know the size of the parent element container?

.

1 Answer

Steven Parker
Steven Parker
231,269 Points

I think you typically use percentages because you don't know the size of the parent, but you want your element to maintain a size proportional to it. The parent size itself wil probably be relative to something else, perhaps the browser window.