body {
    padding-top: 20px;
    padding-bottom: 20px;
}

.container-narrow {
    margin: 0 auto;
    max-width: 700px;
}
.container-narrow > hr {
    margin: 30px 0;
}

.jumbotron {
    margin: 60px 0;
    text-align: center;
}
.jumbotron h1 {
    font-size: 72px;
    line-height: 1;
}
.jumbotron .btn {
    font-size: 21px;
    padding: 14px 24px;
}