I am having the same issue and I have tried everything I can think of. I can edit in “additional CSS” just fine, but when I edit style.css in my child theme, nothing changes.
For example, I was able to get waywetrip.com/sample-page to show full width by adding this to the “additional CSS” section, but same thing wouldn’t work in style.css.
@media screen and (min-width: 48em) {
body.page-template-page-full-width .page-full-width #primary .entry-content {
width: 100%;
}
body.page-template-page-full-width .page-full-width #primary .entry-header {
width: 100%;
}
body.page-template-page-full-width .entry-header #primary .entry-title {
font-size: 5rem;
font-size: 80px;
}
}
