#tocDIV {
    max-height: 90%;
    overflow: auto;
    position: absolute;
    border: 1px solid #ccc;
    border-radius: 6px;
    webkit-border-radius: 6px;
    moz-border-radius: 6px;
    width: 183px;
    margin-top: 20px;
    margin-left: 0px;
    height: fit-content;
    background-color:white;
}


#toc li {
    list-style: none;
    margin: 0;
    padding: 0;
    border: none;
    line-height: 30px;
    cursor: pointer;
    font-size: 15px;
    font-weight: bold;
}

    #toc li > ul > li {
        text-indent: 20px;
        font-size: 14px;
        font-weight: normal;
    }