Making list section titles the same size as h3 on tablets/mobile

Site URL: https://roadrunner-star-7b6s.squarespace.com/

Hello! I've added some custom CSS to make the titles on list sections ("What kinds of tree restoration are we looking for") and ("How will the process work") to make them the same size as the h3 styling on other sections. However, when I view on tablet/mobile size, the custom headers stay large, and the actual h3's scale down a bit. How can I make it so that the custom CSS titles scale down accordingly?

Thank you!!

pass: fund

Here is the custom CSS I have currently, which works on desktop.

Hi,

h3 desktop - mobile uses different size, not same.

h3 mobile is calc((2.2 - 1) * 1.2vh + 1rem)

Use this code

.list-section-title {
    font-family: Poppins !important;
    font-size: 2.2rem !important;
    font-weight: 500 !important;
    font-style: normal !important;
    line-height: 1.4em !important;
    letter-spacing: 0em !important;
    text-align: left !important;
}
@media screen and (max-width:767px) {
.list-section-title {
    font-size: calc(~"(2.2 - 1) * 1.2vh + 1rem") !important;
}
}