Thanks @supernovia – I tried adding the CSS and removing the padding as you suggested, but it didn’t work (although I might not have been doing it correctly). However, I reset the template ad rebuilt the page and it appears that it is the bullet points/list that I use in the lower part of the page that is for some reason making the submenu change its format. When I remove the bullet points it goes back to normal. Seems a bit odd, but for the moment I will just work with work-around manual bullet points!
Thanks for your help!
