custom.css

h1 {
    color: tomato;
    font-size:300% !important;
w}

h2 {
    color: seagreen;
    font-size:200% !important;
}

h3 {
    color: deepskyblue;
}

h4 {
    color: royalblue;
}

.text_cell_render {
    position: relative;
}


.link_index {
    color: gray;
    font-size: 10px;
    display: block;
    position: absolute;
    top: 0px;
    right: 0px;
    height: 40px;
}

.toc a{
    text-decoration: none !important;
}

.toc li {
    list-style-type: none;
}

div > .toc > li {
    display: none;
}

div > ul.toc,
div > .toc > ul {
    padding: 0 !important;
}

div > .toc > ul > li > a {
    font-size: 120%;
    margin-bottom: 10px;
}

div > .toc > ul > ul > li > a {
    font-size: 100%;
    margin-bottom: 10px;
}

div > .toc > ul > ul > ul >li > a {
    color: gray;
    font-size: 100%;
    margin-bottom: 10px;
}

.jp-OutputArea-child .jp-OutputArea-output {
    display: none;
}