Make section background white on mobile only

Hi, we want to make our process section white on mobile only, https://familybredpuppies.squarespace.com/available-golden-retrievers-for-adoption-1 code I have tried but doesnt work 

@media screen and (max-width: 640px) {
  section[data-section-id="63fcd380044e105d6c0ed6cc"] {
  background: #ffffff; 
}
}

Add to Design > Custom CSS

/* Mobile Our Process */
@media screen and (max-width:767px) {
[data-section-id="63fcd380044e105d6c0ed6cc"] .section-border .section-background {
    background-color: white !important;
}
}

On 3/5/2023 at 7:36 AM, tuanphan said:

Add to Design > Custom CSS

/* Mobile Our Process */
@media screen and (max-width:767px) {
[data-section-id="63fcd380044e105d6c0ed6cc"] .section-border .section-background {
    background-color: white !important;
}
}

 

thanks!