Hello,
Add the code below to child theme style.css:
1) this one
.global-post-template-large .single-post-large-wrapper .post-heading h2 {
font-size: 3rem;
}
2) this one
@media only screen and (max-width:992px){
.global-post-template-large .single-post-large-wrapper {
max-height: 35vh;
}
}
Regards