#linus {
    position: absolute;
    width: auto;
    height: 300px;
}

#linus:hover {
    width: 300px;
    height: 300px;
}

#linus-cage {
    text-align: center;
    position: absolute;
    display: flex;
    flex-direction: column;
    background-image: url('images/linpg.png');
    background-size: 500px 500px;
    width: 500px;
    height: 500px;
    color: white;
}

.cent {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

#linus-cage:hover {
    background-image: url("images/linfuck.png");
}

img.linus:hover {
    content: url("images/linfuck.png");
}