Pictures resize unintentionally

Hi Folks,
first sorry about my english, it is not my native language, so I try my very best to descibe my problem properly.

I use the SiteOrign pagebuilder on my WordPress-website on two different pages. Both got the same problem… so I assume it’s my fault.

Vorstand

and

Ordensgalerie

strangely the pictures on the the second link are fine and look as they should

On both pages there are pictures wich are all lined up. But everyday when I go the the page, the Images are not in the right shape.. they overlap eachother in a strange way. I assume that maybe the diffrent sizes of the pictures is the problem.

The funny thing is: When I log on my WordPress-Website, I only have to refresh the pages and everything is as it should be, no overlapping whatsoever…. but that can not be the solution.

I can give further information as soon as I got home form work

Help!