Hello All CSS experts...I have been using a CSS to auto expand but after the update, it no longer works. Any ideas?

/* Auto-expand table of contents in courses with folders and hide down arrow */

.chapters tree-view

{

    display: flex !important;

}

em.zmdi-chevron-down

{

    visibility: hidden;

}

/** Hide the Header Bar **/

#doc-layout-title-bar {

    display: none;

}