Pictures Not Resizing Properly

I am inserting three pictures at the large format size, setting them up next to each other, and then resizing them down to 60%, however it just seems that the caption box resizes and the image itself stays the same and overlaps over the one next to it. How can I get them to resize properly?

I’m using the free word press version of Twenty Ten

https://www.nschwaller.com/mywork/architecture/maine