body {
    background-color: #14171a;
    color: #fff;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100vh;
    margin: 0;
    padding: 0;
}

a, .footer {
    color: #17a2b8;
    margin-top: 25px;
}

.footer {
    position: fixed;
    bottom: 0;
    width: 100%;
}

.masthead {
    padding-top: calc(6rem + 74px);
    padding-bottom: 6rem;

    .masthead-heading {
        font-size: 2.75rem;
        line-height: 2.75rem;
    }

    .masthead-subheading {
        font-size: 1.25rem;
    }

    .masthead-avatar {
        width: 15rem;
    }
}