    /**
     * @class Ext.container.ButtonGroup
     */

    /**
     * @var {color}
     * The background-color of the ButtonGroup
     */
    $btn-group-background-color: #fff !default;

    /**
     * @var {color}
     * The border-color of the ButtonGroup
     */
    $btn-group-border-color: $base-color !default;

    /**
     * @var {number}
     * The border-radius of the ButtonGroup
     */
    $btn-group-border-radius: 0px !default;

    /**
     * @var {number}
     * The border-radius of framed ButtonGroups
     */
    $btn-group-framed-border-radius: 2px !default;

    /**
     * @var {number}
     * The border-width of the ButtonGroup
     */
    $btn-group-border-width: 1px !default;

    /**
     * @var {number/list}
     * The body padding of the ButtonGroup
     */
    $btn-group-padding: 0 1px !default;

    /**
     * @var {number/list}
     * The inner border-width of the ButtonGroup
     */
    $btn-group-inner-border-width: 1px !default;

    /**
     * @var {color}
     * The inner border-color of the ButtonGroup
     */
    $btn-group-inner-border-color: #fff !default;

    /**
     * @var {number/list}
     * The margin of the header element. Used to add space around the header.
     */
    $btn-group-header-margin: 0 !default;

    /**
     * @var {number}
     * The font-size of the header
     */
    $btn-group-header-font-size: $font-size !default;

    /**
     * @var {number}
     * The font-weight of the header
     */
    $btn-group-header-font-weight: normal !default;

    /**
     * @var {number}
     * The font-family of the header
     */
    $btn-group-header-font-family: $font-family !default;

    // private
    $btn-group-header-font: $btn-group-header-font-weight $btn-group-header-font-size $btn-group-header-font-family !default;

    /**
     * @var {number}
     * The line-height of the header
     */
    $btn-group-header-line-height: 16px !default;

    /**
     * @var {number}
     * The text color of the header
     */
    $btn-group-header-color: #000 !default;

    /**
     * @var {number}
     * The padding of the header
     */
    $btn-group-header-padding: 4px 5px !default;

    /**
     * @var {number}
     * The background-color of the header
     */
    $btn-group-header-background-color: $base-color !default;

    /**
     * @var {number}
     * The border-spacing to use on the table layout element
     */
    $btn-group-border-spacing: 0 !default;

    /**
     * @var {number}
     * The background-color of framed ButtonGroups
     */
    $btn-group-framed-background-color: $btn-group-background-color !default;

    /**
     * @var {number}
     * The border-width of framed ButtonGroups
     */
    $btn-group-framed-border-width: 1px !default;

    /**
     * @var {string}
     * Sprite image to use for header {@link Ext.panel.Tool Tools}
     */
    $btn-group-tool-background-image: 'tools/tool-sprites' !default;

    /**
     * @var {boolean}
     * True to include the "default" button group UI
     */
    $include-btn-group-default-ui: $include-default-uis !default;

    /**
     * @var {boolean}
     * True to include the "default-framed" button group UI
     */
    $include-btn-group-default-framed-ui: $include-default-uis !default;