Images are not showing up on home page blog

http://www.ahtflorida.com/aht_lifestyle-technology-blog/

The top image does but non of the other images. I recently updated new WP version, and I also had an issue with css style page where I had to reload it because when I went to modify it the whole page disappeared I had to grab the original css file from the template folder and put it back in. Now, my links are different then before and the images are not showing up. Any suggestions?