ul.toc-tree,
.toc-tree ul {
    list-style: none;
    padding: 0;
} 

ul ul {
    margin-left: -20px;
}

ul.history ul {
    margin-left: 10px;
}


.toc-tree li {
    display: flex;
    align-items: top;
}

.toc-tree li > div {
    margin-right: 3px;
}

.toc-check {
    display: inline-block;
}

.caret {
    cursor: pointer;
    user-select: none;
    display: inline-block;
    align-self: flex-start;
    transform: rotate(90deg); 
}

.caret-up {
    transform: none;
}

.caret-up + div > ul {
    display: none;
}


.toc-title {
    display: inline-block;
}