1×1 px image becomes large space in mobile device

I have a tiny image for some affiliate-links on my website, but it’s a huge difference in white space in a mobile device.

Is this something I can correct with CSS or do I have to remove these 1 x 1 pixel images?

Link here:
https://responsivetest.net/#u=https://www.makeupedia.se/formula-10-0-6-seriously-shine-free-recension|952|1088|2
(note: this is only visible from mobile devices)