Hello mariettedietz,
It takes some time but we finally found the solutions. The button text Lees verder over mijn missie en visie is longer than phone width and issue occurs. You can change the button text to shorter or can use the following custom CSS:
.acme-featured-image .btn-primary {
font-size: 12px!important;
}Let us know if this solve the issue.
Best Regards!
Acme Themes