[SCSS BEM mofifiers] #BEM #SASS #SCSS

block.scss

.block {
    display: block;

    &__element {
        display: inline;

        &--m1 {
            background-color: red;
        }

        &--m2 {
            background-color: green;
        }

        // Correct!
        &--m1#{&}--m2 {
            background-color: yellow;
        }
    }
}