Change page title/description mobile font size in The Fulton Cycle template

In Fulton, I am using both Index pages and regular pages.  When I do “Inspect” in my browser on the regular pages, the page title and description in the banner css template code is:

@media only screen and (max-width: 640px)

.banner-thumbnail-wrapper .page-description p {

    font-size: 20px !important;

}

I need to change that to 36px so it will match the H1 phone font setting on my Index page title/description.  How to do this?  Or where to go to override the “!important" Part of the template’s native code?

add to Last line in Design > Custom CSS

@media only screen and (max-width: 640px) {
.banner-thumbnail-wrapper .page-description p {
    font-size: 36px !important;
}
}