body {
    background-image: url('');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}
video {
    max-width: 100%;
    height: auto;
}
p {
    font-size: 30px;
    color: cyan;
    text-align:center;
    margin-top: -100px;
}