html, body {
    height: 100%;
    margin: 0;
}

.content {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    flex-flow: column;
    text-align: center;
}

.logo {
    margin-bottom: 15px;
}

.description, .submit {
    margin: 8px;
}