Hello!
You can use the following code in your custom CSS:
@media only screen and (max-width: 1024px) and (min-width: 767px)
{
.sppb-addon-image-layout-wrap .sppb-col-sm-6 {
flex: 0 0 100% !important;
max-width: 100%!important;
}
.image-layout-preset-style-collage .sppb-addon-image-layout-content{
margin:0 auto;
}
}
I have taken the max width as 1024px, if your tab has a wider screen resolution then you can use that value!
Note: Path towards custom CSS:
Extensions>Templates>Styles>
Click on your current default template name then choose Template Options.
Then find custom CSS within the custom code.
https://prnt.sc/pu705g
https://prnt.sc/pu70zn
Best Regards