Icons are different sizes on desktop v mobile

Design help General
1

Hello!

Experiencing this weird issue where a drop-down button icon is different sizes on desktop v mobile. Any idea how to fix these? You can see it in these screenshots:

image
image1038×1448 55.6 KB

image
image960×2216 244 KB

Here is my site Read-Only: LINK
(how to share your site Read-Only link)