Comments widget alignment

Comments widget is fully functional, however in mobile portrait mode there is large white space to right side as per first picture
The second picture shows mobile landscape and is centred equally
I suspect the wrapper is too large for mobile portrait view, but any assistance would be great.

I’m reluctant to give link to the page as I’m on 200 views/mth as a trial to make sure I’m happy with everything and don’t want a increased page visits to cause my limit to be reached.

I’ve looked in the settings to see if I can edit the widget size, but could not find a way.

any help would be much appreciated.

Daz