.container {
    height: 90vh; 
    width:90vw;
    display:flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

img {
    max-width: 100%;
    height: auto;
}

h1 {
    visibility: hidden;
    line-height: 0;
    margin: 0;
}