Sidebar Jumping Down

What theme are you using?

BuddyPress Corporate by WPMUDEV

Thanks. I can’t test this directly, as I don’t have a WPMUDEV subscription. It may be worth asking their premium support to take a look at it – it’s likely a CSS thing that could be fixed with a line or two of custom styles.

Are you having the problem with any other BuddyPress pages?

I have spoken to them and they told me to ‘try this using css’:

#custom #buddypress {
  width: 90%;
}
#custom .content {
    width: 80%;
}

But I don’t know what file I have to put it in or if I just add it, or replace another piece of code… Kinda new to all this, would you have any idea what file I add this code to and do I need to replace anything?