SOLVED: I have a strange behavior with a page template and device less than 480px.
I use OxyNinja and designed a template with a two-column page (content + sidebar). The sidebar renders perfectly fine. But the content is reaching across the right border when the device size is 480px or less (all others render fine).
When I check in the inspector, figured out that the reason is a width:100% on the ID of the content div. Whereas, in Oxygen, there is nothing set on that specific ID.
How can I fix that?