Mobile vs Desktop headings

Hello, is it possible to adjust the text heading size on mobile without it changing on desktop? Very frustrating that when I have the text perfect on mobile, it ruins the desktop view. 

Yes. Possible. Can you share link to page where you have problem? We can help easier

https://www.valleydental.au/dental-implants

Also very frustrating that we cannot seem to get the titles under 'types of dental implants' to be the same size on mobile.

22 hours ago, Katey001 said:

https://www.valleydental.au/dental-implants

 

Also very frustrating that we cannot seem to get the titles under 'types of dental implants' to be the same size on mobile.

You can add this to Design > Custom CSS

@media screen and (max-width:767px) {
.fe-648a58b7a47b8f431c670a02 h3 span {
    font-size: 30px !important;
}
}