Front page is not displaying correctly

Hi…I’m new to wordpress & know little or nothing about coding.
I am using Snaps theme, by Graph Paper Press. I created a child theme and have been making some changes to the css. But I have discovered that the homepage layout (4 column grid) is not working properly – no featured image appears in row 2, column 4 or row 4, column 4. With firebug I was able to identify some ‘funky’ html script, but cannot figure out how to change the css or the html to resolve the issue. Any help would be much appreciated!!

Thanks…Tonya