.#{$prefix}pivot-grid-group {
        &:before {
            font-family: $pivot-grid-collapse-glyph-font-family;
            font-weight: $pivot-grid-glyph-font-weight;
            padding-right: 8px;
        }
    }

.#{$prefix}pivot-grid-group-header-collapsible {
    .#{$prefix}pivot-grid-group {
        background-image: none;
        &:before {
            content: $pivot-grid-collapse-glyph;
        }
    }
} 
.#{$prefix}pivot-grid-group-header-collapsed {
    .#{$prefix}pivot-grid-group {
        background-image: none;
        &:before {
            content: $pivot-grid-expand-glyph;
        }
    }
}