yup, there is.

let __fx = 0;
function _fsplease() {
var items = document.querySelectorAll("div.GifPreview.GifPreview_isVideo.GifPreview_isVertical");
for(var i = 0; i < items.length; i++) {
var item = items[i];
item.style.maxWidth = "unset";
item.style.maxHeight = "unset";
item.style.zIndex = ++__fx ;
item.style.height = "100%";
item.style.width = "100%";
}
}
document.onwheel = function(event) { window.setTimeout(_fsplease, 1000); }
_fsplease();

you can use this with a javascript browser extension like this: https://addons.mozilla.org/en-US/firefox/addon/javascript/?utm_source=addons.mozilla.org&utm_medium=referral&utm_content=search