File: web/bundles/extjs/resources/theme-bootstrap/theme/stylesheets/bootstrap/default/widgets/form/_checkboxgroup.scss

/**
 * Creates the base structure of CheckboxGroup.
 * @member Ext.form.CheckboxGroup
 */
@mixin extjs-form-checkboxgroup {

    .#{$prefix}form-checkboxgroup-body {
        padding: 1px 4px 1px 4px;
    }

    .#{$prefix}form-invalid {
        .#{$prefix}form-checkboxgroup-body {
            border: 1px solid #c30!important;
            background: transparent repeat-x bottom;
            background-image: theme-background-image($theme-name, 'grid/invalid_line.gif');
            padding: 1px 3px 0 3px;
        }
    }

    .#{$prefix}check-group-alt {
        background: adjust-color($base-color, $hue: 2.667deg, $saturation: -7.168%, $lightness: 3.725%);

        border-top:1px dotted adjust-color($base-color, $hue: 17.193deg, $saturation: -40.827%, $lightness: -9.412%);
        border-bottom:1px dotted adjust-color($base-color, $hue: 17.193deg, $saturation: -40.827%, $lightness: -9.412%);
    }

    .#{$prefix}form-check-group-label {
        color: #333;

        border-bottom: 1px solid #333;

        margin: 0 30px 5px 0;
        padding: 2px;
    }
}