body {
    text-align: center;
}

section.center {
    display: block !important;
    margin: 0 auto !important;
    position: absolute !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
}

h1 {
    font-size: 7rem !important;
    font-weight: 700 !important;
}

p.subtitle {
    margin-top: 15px;
}

button {
    margin-top: 20px;
}