.mce-toc {
    margin: 20px auto;
    width: 99%;
    position: relative;
    background-color: var(--background-color);
    padding: 1rem 1.5rem .5em;
    border-radius: 5px;
    -webkit-box-shadow: 1px 1px 10px 0px rgba(0, 0, 0, .2);
    box-shadow: 1px 1px 10px 0px rgba(0, 0, 0, .2)
}
.mce-toc h3 {
    cursor: pointer;
    margin: 0
}
.mce-toc span {
    cursor: pointer;
    color: #fff;
    width: 1.6rem;
    height: 1.6rem;
    float: right;
    border-radius: 50%;
    line-height: 20px;
    text-align: center;
    font-weight: lighter;
    background-color: var(--primary-color);
}
.mce-toc ul {
    padding: 0
}
.mce-toc li>ul li {
    list-style-type: disc
}
.mce-toc li {
    list-style: auto;
    margin: .3rem 0 0 20px;
    transition: .2s ease all
}
.mce-toc li a {
    font-size: var(--font-size);
    line-height: var(--line-height);
    color: var(--main-color)
}
.mce-toc li>ul {
    padding-left: 1rem;
    margin: 0
}
.mce-toc h3:before {
    content: '📚';
    margin-right:10px;
}