body {
    font-family: "Comfortaa", sans-serif;
    font-optical-sizing: auto;
    font-weight: 400;
    font-style: normal;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
}

h1, 
video,
button,
input {
    margin: 10px 0;
}

#camera-feed {
    width: 100%;
    max-width: 400px;
    height: auto;
    display: block;
}