Is it just my computer or is it all computers? Is the video screen on YouTube being changed on your computer 2?

I went on YouTube and the screen is really bigger...I don't like it lol. Like the video screen is really bigger I don't really like it.Is it just my computer or is it all computers? Is the video screen on YouTube being changed on your computer 2?ya mine is to it looks like widescreen and most of the videos are used to full screen and are all messed upIs it just my computer or is it all computers? Is the video screen on YouTube being changed on your computer 2?It's for everyone. They adjusted it for wide-screen displaysIs it just my computer or is it all computers? Is the video screen on YouTube being changed on your computer 2?That happened when i cleared my history , i hate it !!!!Is it just my computer or is it all computers? Is the video screen on YouTube being changed on your computer 2?I noticed it yesterday. It was weird how some videos were in big screen then normal than big again everytime I clicked on a another video.