Images are running off the page

I have everything working, but the images will not add a line break I have tried adding .hashimage-container {width:500px;} and it appears when I view the code, but the images continue to run off the page….. any help is appreciated.
https://www.ufofestivalroswell.com/fan-photos/

https://www.ads-software.com/plugins/ep-hashimage/