Setting width/height for photos doesn't affect them

I’m trying to make an About page for a new site, and I uploaded a photo to use on that page. The default height and width are set at 600x800, but I want the photo much smaller. However when I delete the height and set the width to 200, the photo stays the same size.

I checked help here, and it’s telling users to adjust height and width. What do I need to do?

The page with the issue is:

Looks like this is happening because that theme has a default CSS rule to try to make all images fill the width. If you want to override this for just one image, try adding a style attribute to your img tag. For example, edit the page and use something like this:

<img src="…" style="max-width: 200px;">

Let us know if that doesn’t fix it.