span[class="flossBUTTER"] {
    background-image: url("floss/butter.png");
}
span[class="flossDEBIAN"] {
    background-image: url("floss/debian.png");
}
span[class="flossGITHUB"] {
    background-image: url("floss/github.png");
}
span[class="flossICECAST"] {
    background-image: url("floss/icecast.png");
}
span[class="flossINAES"] {
    background-image: url("floss/inaes.png");
}
span[class="flossLINUX"] {
    background-image: url("floss/linux.png");
}
span[class="flossMALBEC"] {
    background-image: url("floss/malbec.png");
}
span[class="flossPCT"] {
    background-image: url("floss/pct.png");
}
span[class="flossSLCFK"] {
    background-image: url("floss/slcfk.png");
}