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

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

.fullscreen-image {
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #000;
}

.fullscreen-image img {
    width: 100vw;
    height: 100vh;
    object-fit: cover;
    display: block;
}