body{
    background-color: whitesmoke;
    text-align: center;
    align-items: center;
}

img {
    width: 40px; 
    height: 40px; 
    padding: 0px 2px;
}

#giallo{
    background-color: #f7f736;
}

#verde{
    background-color: #30c94c;
}

#blu{
    background-color: #309cc9;
}

#viola{
    background-color: #bd63c9;
}