Hi,
Doesn´t seems to work. The code that I used was:
.page-template-create_content .list-group-item.vibe_vibe_quiz_dynamic {
display: none !important;
}
Well this works fine on our test setup, refer: http://prntscr.com/aivhd9
Please try clearing the browser cache.
If still the issue persits, then share the credentials with us to check and give you appropriate solution to this.
As mentioned in another topic, you had selected the default template for the edit course page. The correct template for edit course page is create content. I have already changed the template and it works fine now.
Please check and confirm.