body {
    color: #333;
}
h1, h2, h3, h4, h5, h6 {
    color: #111;
    line-height: 1.3em;
}
h2, h3 {
    margin-top: 50px;
}
.doc_container {
    margin: 20px;
    line-height: 1.3em;
}