Brooklyn Theme - Cart drawer checkout button pushed down on mobile after adding multiple

[VIVTWO]

When multiple products are added the Check Out button is pushed too low making it difficult to press on newer iPhones with the swipe up feature.

I assume the plugin that adds the blue text (Volume & Discounted Pricing) is affecting this. Is there a way to make the cart 100% mobile height and keep the Check Out button in the correct position? When only 1 product is added it's fine.

Here's the website:

https://vivtwo.com/products/vintage-engraved-journal

[paramSoft]

Please place this code at the end of theme.scss

.ajaxcart__footer {
    height: 172px !important;
}
.ajaxcart__inner {
    bottom: 218px !important;
}