Stacking images for mobile version

Site URL: https://www.inspireaconnection.com/

Can you tell me how to get the image and text box to stack on top of each for the mobile version?

See screenshot.

Add to Design > Custom CSS

/* Mobile-Homepage-Stacked Collage images */
@media screen and (max-width:767px) {
body.homepage .design-layout-collage .intrinsic {
    width: 100% !important;
}
body.homepage .design-layout-collage figcaption.image-card-wrapper {
    width: 100% !important;
    margin-top: 10px !important;
}
}