    .#{$prefix}column-header-checkbox {
        border-color: $grid-header-background-color;
    }

    .#{$prefix}grid-row-checker,
    .#{$prefix}column-header-checkbox .#{$prefix}column-header-text {
        height: $form-checkbox-size;
        width: $form-checkbox-size;
        background-image: theme-background-image($form-checkbox-image);
        // IE6, IE7, and all IE Quirks mode need line-height to be the same as checkbox height
        // or the header/row height will be too tall
        line-height: $form-checkbox-size;
    }

    .#{$prefix}column-header-checkbox .#{$prefix}column-header-inner {
        padding: $checkbox-selection-model-column-header-padding;
    }

    .#{$prefix}grid-cell-row-checker .#{$prefix}grid-cell-inner {
        padding: $checkbox-selection-model-cell-padding;

        @if $grid-no-row-lines-show-focus-border {
            .#{$prefix}grid-no-row-lines .#{$prefix}grid-row-focused & {
                padding-top: top($checkbox-selection-model-cell-padding) - $grid-row-cell-border-width;
                padding-bottom: bottom($checkbox-selection-model-cell-padding) - $grid-row-cell-border-width;
            }
        }
    }

    .#{$prefix}grid-hd-checker-on .#{$prefix}column-header-text,
    .#{$prefix}grid-row-selected .#{$prefix}grid-row-checker,
    .#{$prefix}grid-row-checked .#{$prefix}grid-row-checker {
        background-position: 0 (-$form-checkbox-size);
    }