body {
    padding-top: 5em;
    color: #444;
}
h1 {
    font-size: 2.4rem;
    font-weight: 700;
    color: #130654;
}
h2 {
    font-size: 1.45rem;
    font-weight: 700;
    color: black;
}
h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: black;
}
a {
    color: #130654;
}
code {
    white-space: pre;
}
.fab {
    font-size: 1.2rem;
    color: #666;
}
.fab:hover {
    color: #130654;
}
a.navbar-brand img {
    max-height: 2em;
}
div.card {
    margin: 0 0 .2em .2em !important;
}
div.card .card-title {
    font-weight: 500;
    color: #130654;
}
.book {
    padding: 0 20%;
}
.bg-dark {
    background-color: #130654 !important;
}
.navbar-dark .navbar-nav .nav-link {
    color: rgba(255, 255, 255, .9);
}
.navbar-dark .navbar-nav .nav-link:hover {
    color: white;
}
