Are you editing the .css files? If so then that's your problem - you need to edit the LESS files:
Ohhh, I have read several times that it´s made with less... Thanks.
Can't really explain this, but I was scrolling through the Persona theme announcement thread and got some very strange behaviors. Don't know if this is theme-related or a problem with the engine. Screen shots to explain are below. I'm using Chrome 41.0.2272.118 m which claims it is up to date (and so it probably is). Console was free of errors.
In both cases, I believe there should only be one reply button at the bottom of the page. I think this may be related to using the mouse scroll-wheel to scroll down the page.
Reproduced both behaviors with a trip back to that thread (which is pretty long at 104 posts) and also on this thread which has 53 posts.
Also, the extraneous reply buttons don't do anything - they're just hanging out there.
Happens after loading more posts. So could be an issue with infinite scroll.
Weird I can't repro on this forum or my dev.
You're not using maintenance mode here and v0.7.0-dev is updated regularly. On sites running PHP such behaviour comes from files being overwritten during maintenance.
I just saw this issue on this forum. I was reading the persona preview thread, ignoring the box telling me to go where I left off. Then I quickly scrolled to the bottom. There were 5 reply buttons in a row with no posts between them.
I am using the latest version of chrome.