.body-bg {
    background: #fefefe url(../images/bg2.png) repeat center center;
}
.col-centered{
    margin: 0 auto;
}
.center-block {
    display: block;
    margin-left: auto; margin-right: auto;
}
.pd-20 {
    padding: 20px;
}
.mg-lr-10 {
    margin-left: 10px;
    margin-right: 10px;
}