/* Force toctree to stay expanded */
.toctree-checkbox {
    display: none !important;
}

.toctree-l1 ul {
    display: block !important;
}

/* Hide the expand/collapse arrows */
label[for^="toctree-checkbox-"] {
    display: none !important;
}

/* Always show nested items */
.sidebar-tree .toctree-l1>ul {
    display: block !important;
}