Stop Mobile fallback image appearing before video

Site URL: https://damientansey.squarespace.com/

I have a video playing in the banner, and a gif set as a fallback image for mobile. I want to stop/block the fallback image/gif from loading on desktop? Any ideas? Thanks in advance. 

On 12/2/2021 at 3:56 PM, MMC_IRL said:

Site URL: https://damientansey.squarespace.com/

I have a video playing in the banner, and a gif set as a fallback image for mobile. I want to stop/block the fallback image/gif from loading on desktop? Any ideas? Thanks in advance. 

Add to Design > Custom CSS

/* hide fallback image on desktop */
@media screen and (min-width:901px) {
body.homepage .banner-thumbnail-wrapper.has-description figure img {
    visibility: hidden !important;
    opacity: 0 !important;
}
}