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

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

.container {
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}