Hello,
Thanks for contacting us – we are happy to help you adjust the font size of the h2 title-main in Grid One. Since Grid One uses a very large heading size, when using longer words we suggest using CSS Media Queries to set specific font sizes for different devices. I tested using your heading, and I found this code to work. You can copy and paste it into Customizer > Custom JS & CSS in the Custom Theme CSS section at the top of that panel:
@media (max-width:767px) {
h2.title-main {
font-size: 44px !important;
}
}
@media (min-width:768px) and (max-width:1200px) {
h2.title-main {
font-size: 60px !important;
}
}
@media only screen and (min-width: 1200px) {
h2.title-main {
font-size: 79px !important;
}
}
Please let us know if this worked, or if you have any other questions.
Thanks,
Nicole