Websites on chrome

Hi, so I'm using google chrome. I'm coming from using chrome on windows, and I'm finding that some websites display a lot differently.
For example, when using the overcast web player, all the active podcast, don't have a name, there is a lot of text letters. This also seems to happen on the netflix.com site as well.
I'm alittle confused.

Forum: 

Same Over Here

I've got both Safari and Chrome on my MacBook Air, and I use them interchangeably. Both are quite good in my opinion, but I have this issue as well. An example is the online portal for a local network of hospitals. This portal was very accessible when I first registered on it, and the upgrade they recently performed is fortunately also very accessible. But for some reason the portal appears different in these 2 browsers. So I'm also wondering why that is. Perhaps it has something to do with design?