body {
    background: linear-gradient(darkgray, lightgray);
    padding: 16px;
    padding-bottom: 96px;
    min-height: 100vh;.
}

h1 {
    font-weight: bold
}

.navbar {
    position: fixed;
    bottom: 16px;
}

.nav-link {
    padding-left: 16px
}

.emphasis {
    color: darkred;
    font-weight: bold;
}

.img-thumbnail {
    height: 256px;
}