.toc_title{
    color: rgb(121, 121, 121);
    font-weight: bolder;
    font-size: 30px;

    position: relative;
    left: 16px;
}
#ic{
    position: relative;
    right: 20px;
    font-size: 30px;
}
#toc{
    position: sticky;
    top: 100px;
    left: 10px;

    overflow: auto;

    max-height: 600px;
    width: 20%;


    flex-shrink: 100;
}
.toc-link{
    font-size: 16px;
    display: block;
    min-width: 150px;
    margin-top: 0px;
    transition: 0.6s;
}
.toc-link:hover{
    color: aqua;
    transition: 0.6s;
}
#toc li{
    list-style: none;
    margin-top: 2px;
    position: relative;
    left: 10px;
}
#toc ol{
    list-style: none;
    margin-top: 2px;
    position: relative;
    leftt: 10px;
}

@media (max-width: 768px) {
    #toc { display: none; }
}

#container__{
    display: flex;
    justify-content: center;
}