Icon resize and position on mobile

Site URL: https://www.olesyaoligradska.com/the-sisterhood-circle

Hi! I'm adjusting a client's website design. Attached, you will see the design of the section on desktop (attachment: Desktop view). I'm trying to add custom code to resize the checkmark icon on mobile. I tried this:

@media only screen and (max-width: 640px) {
  #sisterhood-outcomes img {
    height: 50% !important;
    width: 50% !important;
  }
}

But, the result is shown in the second image (attachment: mobile view). Side note: I realize the percentages will likely need to be smaller.

Does anyone have any suggestions on how to customize the code on mobile to keep the check marks inline with each point?

Thanks in advance!

I think, on mobile, you should change to FontAwesome Icon.