Annotations CSS for modals affects non-annotations modals

[tonyjin]

Please fill out the following template so we can reproduce and fix your issue as quickly as possible!

Environment:

• Browser name and version: Chrome 63
• Operating system and version: OSX 10.12.6

Steps to reproduce the problem:

1. Open preview of a large file in CodePen and press print. Note the appearance of the print popup.
2. Open preview of a large file in WebApp (with annotations cookie flip on) and press print. Note the appearance of the print popup.
3. Popups should look the same, but do not.

What is the expected behavior? (Screenshots can be helpful here)
What CodePen looks like (without annotations CSS):

What went wrong? (Screenshots can be helpful here)
What WebApp looks like (with annotations modal CSS):