Images appear blank on website

Hello humans,

I was recently changing somethings on my website to make the front page load a little bit faster, and now all of the images are coming up blank. They are there, because when I save them or move them, you can see that the image is there. I did not change any settings, however I did resize them. When the issue began, I restored them to the original size and re-uploaded them with no luck. I use Divi theme and my website is http://www.yourluckybooth.com

Please help! Thanks! 🙂