@frenesi4 That's why I use opera 99. It is very disturbing to have absurd white lines on the side while watching videos on Youtube. I think it's time to switch to another browser.
I thought it was a nice refresh of the interface, so now I'm skeptical about it.
I was skeptical already when I first launched the 'One' version. The refreshed interface looks cool only on their promotional videos and screenshots, but the user experience suffered a lot actually.