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

3D Transforms Quiz question

I can't seem to get the proper answer for the question, "To tell the browser to hide the backside of a 3D element, we’ll need to use the __________ property and the ________ value ."

I've been trying multiple variations of what I know to be the correct answer. Frustrating... I reload the quiz and try again because I want to get all the questions right before I move on.

Any hint? (Even though I know the answer...)

1 Answer

Greg Jones
Greg Jones
7,451 Points

I think what you're referring to is setting 'backface-visibility' to 'hidden'.

This can come in to play with optimizations and effects of 3D objects.

If you have an opaque object, backface culling can save the polys from being rendered. No point in drawing what won't be seen.

Transparent objects though might prefer not to have this enabled, since you'd want to see through the object to the back faces.