.center  { text-align: center; }  

.footer {
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    color: grey;
    text-align: center;
    font-size:small;
}

.rfooter {
    left: 0;
    bottom: 0;
    width: 100%;
    color: grey;
    text-align: center;
    font-size:small;
}