.kokugo {
    background-color: indianred;
    color: aliceblue;
}

.sansu {
    background-color: aqua;
}

.rika {
    background-color: aquamarine;
}

.syakai {
    background-color: khaki;
}

.eigo {
    background-color: deeppink;
    color: cornsilk;
}

.dotoku {
    background-color: cadetblue;
    color: floralwhite;
}

.taiku {
    background-color: chocolate;
    color: blanchedalmond;
}

.ongaku {
    background-color: yellow;
}

.zukou {
    background-color: green;
    color: ghostwhite;
}

.kateika {
    background-color: darkviolet;
    color: ivory;
}

.syodou {
    background-color: black;
    color: azure;
}

.sougou {
    background-color: lemonchiffon;
}