Posts on main page on top of each other

Thanks for a great theme.
I experience images on posts on main page not positioning correctly on first load of page. Post nr 3 (second row) is partially covering the text of the post above.

Somethimes they pos is partially covering the widgets section in the bottom
If I press the Home tab, it straightens out. if I try to refresh the main page it might shift again.

site. https://www.bellevuewoodshop.com

It happens in both google chrome and IE
Somebody else had this problem?

BR
Roy