You go up in the HTML tree and find a parent with a unique class.
You can then add the parent to your selector like so
.parent-class .child-class {
display: none;
}
You can also add more unique parent classes like so
.grandparent-class .parent-class .child-class {
display: none;
}
If needed.
The same thing in SCSS would look like this
.grandparent-class {
.parent-class {
.child-class {
display: none;
}
}
}
This should eliminate the need to use !important