.gr-main {
    min-height: 1px;
}
.gr-bd {
    min-height: 1px;
}
.gr-b {
    float: left;
    margin-bottom: 1px;
    min-height: 1px;
}
.gr-bd .hr-line {
    height: 15px;
}
.gr-in {
}
.gr-2 .gr-b {
    width: 50%;
}
.gr-3 .gr-b {
    width: 33.3%;
}
.gutter-10 {
    margin-left: -10px;
}
.gutter-10 .gr-in {
    margin-left: 10px;
}
.gutter-15 {
    margin-left: -15px;
}
.gutter-15 .gr-in {
    margin-left: 15px;
}
.gutter-20 {
    margin-left: -20px;
}
.gutter-20 .gr-in {
    margin-left: 20px;
}