Currently when trying to read bugs on my phone the comments have to be scrolled whereas parts of the header are fine in terms of width. Would be nice if for starters comments would also be 100% of the width (instead of 150% or something).
I can't reproduce this myself with the responsive mode in Firefox at least, but I've now changed a bit in the CSS that might fix your issue. Please follow up on whether you still see this or not.
Resolving as WORKSFORME as there has been no follow up.