How to edit predefined image dimensions?

[Winkli]

I want to make images (with boxes) smaller on my home and category pages. I do this, the image changes size, but the box/frame is stil the same  

https://zemez.io/prestashop/support/how-to/prestashop-1-7-edit-predefined-image-dimensions/

 

I use Prestashop 1.7.4.2, classic theme. Thank u.

[NemoPS]

You have to add a new rule in custom.css, overriding this

 

#products .thumbnail-container .product-thumbnail img, .featured-products .thumbnail-container .product-thumbnail img, .product-accessories .thumbnail-container .product-thumbnail img, .product-miniature .thumbnail-container .product-thumbnail img {
    max-width: 90%;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;

Then change the max width

[Winkli]

This also changes the image size, but not the size of container/frame