body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
h1 {
    font-weight: 700;
}
form {
    max-width: 400px;
    margin: 50px auto;
}
.card {
    border-radius: 12px;
}

video, iframe {
    border-radius: 12px;
}