Reduce white space bellow collection images

[Daniel19901]

Hi, I'm trying to remove about 50% of the white space I have bellow my collection product images. 
Does anyone knows how can I do that?

Example collection: https://selfio-de.myshopify.com/collections/montagezubehor
Pass: sasa

That's how it looks like at the moment.

[GabrielS · Accepted solution]

Hi,

You can achieve this by adding the below CSS at the end of your theme.css file.

.boost-sd__product-image-wrapper {
  aspect-ratio: 1 !important;
}

Cheers!

[greencloudnine]

And could you provide the same for a collection list?