#toc {
    top: 0px;
    left: 0px;
    height: 100%;
    position: fixed;
    background: #000;
    width: 250px;
    padding-top: 20px;
    color: #fff;
    font-family: Arial;
    overflow: scroll;
}

#toc ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

#toc li {
    padding: 5px 10px;
}

#toc a {
    color: #fff;
    text-decoration: none;
    display: block;
}

#toc .toc-h2 {
    padding-left: 10px;
}
#toc .toc-h2 {
  font-size: 15px;
}

#toc .toc-h3 {
    padding-left: 30px;
    font-size: 14px;
}
#toc .toc-h3 a {
  color: gray;
}

#toc .toc-active {
    background: #336699;
}

#content {
  position: relative;
  left: 265px;
}