When I set overflow-y on a block, it seems to be affecting the overflow-x property. I've made a JSFiddle with an example of this problem. It seems to be happening in all browsers, so I think I'm missing something that should be obvious. I have two non-overlapping blocks (blue and green) along with a third block (red) with the following requirements: The blue and red blocks are adjacent The red blo
![Setting overflow-y causes overflow-x to change as well](https://cdn-ak-scissors.b.st-hatena.com/image/square/98d6f053a97a87156775f60757c60865d0f2c47d/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Fstackoverflow%2FImg%2Fapple-touch-icon%402.png%3Fv%3D73d79a89bded)