Help with mobile placement for floating/overlapping section

Hello! on multiple pages on my site i have overlapping floating sections - how can i do so my section doesn`t overlap on phone version - instead it under the header instead of overlapping 

what can i add to this code to make that change?

section[data-section-id="5f0494567cd525609fff6f78"].page-section {
   padding-bottom: ~"calc(@{slope} + 12vw)"!important;
     @media screen and (max-width: 640px) {
    padding-bottom: ~"calc(@{slope} + 180px + 4vw)"!important;
    }
}

Thanks in advanced 🙂

@tuanphan

@media screen and (min-width:768px) {
section[data-section-id="5f0494567cd525609fff6f78"].page-section {
   padding-bottom: ~"calc(@{slope} + 12vw)"!important;
     @media screen and (max-width: 640px) {
    padding-bottom: ~"calc(@{slope} + 180px + 4vw)"!important;
    }
}
}