    .#{$prefix}grid-locked .#{$prefix}grid-inner-locked {
        border-width: 0 $grid-lockable-separator-border-width 0 0;
        border-style: $grid-lockable-separator-border-style;
    }
    @if $include-rtl {
        .#{$prefix}grid-locked .#{$prefix}rtl.#{$prefix}grid-inner-locked {
            border-width: 0 0 0 $grid-lockable-separator-border-width;
        }
    }

    // Inner locked grid has a 1px border. Last cell looks bad with an extra grey one.
    // The rules must be last because they override default header and cell bordering.
    // Must use the border-right property because we have to override the .x-column-header border-right setting.
    .#{$prefix}grid-inner-locked {
        // Override last border width
        .#{$prefix}column-header-last,
        .#{$prefix}grid-cell-last {
            border-right-width: 0!important;
        }
        @if $include-rtl {
            .#{$prefix}rtl.#{$prefix}column-header-last {
                border-left-width: 0!important;
            }
        }
    }
    @if $include-rtl {
        .#{$prefix}rtl.#{$prefix}grid-inner-locked {
            .#{$prefix}grid-row {
                .#{$prefix}column-header-last {
                    border-left: 0 none;
                }
                .#{$prefix}grid-cell-last {
                    border-left: 0 none;
                }
            }
        }
    }

    .#{$prefix}hmenu-lock {
        background-image: theme-background-image('grid/hmenu-lock');
    }

    .#{$prefix}hmenu-unlock {
        background-image: theme-background-image('grid/hmenu-unlock');
    }