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

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