//.intersectionA {
.sub-selector1, .sub-selector2 {
    border: 2px solid red;
    color: blue;
    z-index: 11;
}
//}

//.intersectionB {
.sub-selector1, .sub-selector2 {
    border: 2px solid red;
    color: blue;
    z-index: 11;
}
//}