Forums
-
- Forum
- Posts
-
- Installation
- 28,421
- Troubleshooting
- 62,412
- Themes
- 10,409
- Plugins
- 15,331
- Requests & Feedback
- 14,958
- Showcase
- 3,254
-
Don’t mean to nit-pick but…
overflow-x is part of the CSS3 draft specification. Maybe the validator you used doesn’t cover CSS3?
In any case, the conditional comments you added are less standards-based.