Re: Change width of column BP-Default theme
If you are making changes to styling you do NOT have to reinstall BP from scratch, it’s simply not necessary.
You should be making changes to a child theme; are you using a child theme? If not follow these instructions here:
https://codex.buddypress.org/how-to-guides/building-a-buddypress-child-theme/
If you are making the changes I described earlier then you enter them in the newly created stylesheet file and they act as an override to the default styles that are pulled in to this stylesheet file.
If you follow this procedure you change nothing about the default styling that can’t be reversed by either simply deleting your new ruleset styles from the child stylesheet file or wrapping them in comments to kill them:
/* #content {these styles cease to be read} */
Give things another go but this time if it doesn’t work don’t reverse things leave it up live if you can and I’ll look and see where you have gone wrong.