.moucheron {
    position: fixed;
    width: 30px;
    height: 30px;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><path fill="%23000000" d="M50,10 Q70,30 50,50 Q30,70 50,90 Q70,70 50,50 Z"/></svg>');
    background-size: cover;
    z-index: 9999;
    pointer-events: none;
}