BuddyPress.org

@bibliata I believe there’s a misunderstanding here. You should not be changing anything within the bp-default theme in /wp-content/plugins/buddypress/bp-themes/bp-default/

If you want to revise the bp-default theme, you should create a child theme https://codex.buddypress.org/theme-development/building-a-buddypress-child-theme/

BP Columns is already a child theme of bp-default theme. If you want to make any style changes in this child theme, the simplest thing to do there is add your new styles at the bottom of custom.css file and back it up since it will be overwritten when it’s upgraded. Or, you can create a new css file e.g. mystyles.css in BP Columns theme folder to add your new styles to, then open up style.css file and add
`@ import url( mystyles.css );`
under `@ import url( custom.css );`
(remove the space between @ and import when you do this)

If you’re using Firefox, install the Firebug add-on to help you ID what elements need to be changed.

And, as I’ve mentioned in the other post, you can use a WP theme which approximates the layout you need and install the BP Template Pack plugin. For reference, we have a list of “bp-template-packed” WP themes, free and premium @ https://codex.buddypress.org/theme-development/wordpress-to-buddypress-theme/#template-packed-wordpress-themes