* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
body {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.message {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
}

.message img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    object-position: center center;
}