Page suddenly too wide with white part

Hi There.

After updating a couple of pages on my site:
https://theicingonyourenglish.com/20-essential-cae-phrases/
and
https://theicingonyourenglish.com/20-essential-cae-phrasal-verbs/

there is now an extra white part on the right hand side on the whole website. There was initially a strange pink like going through the header but now that has gone.
I edited the permalinks on both of these pages slightly. But I can’t see anything wrong – i.e. no extra spaces or anything obvious.
Thanks in advance.

The page I need help with: [log in to see the link]