}\n\n  _getScrollHeight() {\n    return this._scrollElement.scrollHeight || Math.max(\n      document.body.scrollHeight,\n      document.documentElement.scrollHeight\n    )\n  }\n\n  _getOffsetHeight() {\n    return this._scrollElement === window ?\n      window.innerHeight : this._scrollElement.getBoundingClientRect().height\n  }\n\n  _process() {\n    const scrollTop = this._getScrollTop() + this._config.offset\n    const scrollHeight = this._getScrollHeight()\n    const maxScroll = this._config.offset...

}\n\n  _getScrollHeight() {\n    return this._scrollElement.scrollHeight || Math.max(\n      document.body.scrollHeight,\n      document.documentElement.scrollHeight\n    )\n  }\n\n  _getOffsetHeight() {\n    return this._scrollElement === window\n      ? window.innerHeight : this._scrollElement.getBoundingClientRect().height\n  }\n\n  _process() {\n    const scrollTop    = this._getScrollTop() + this._config.offset\n    const scrollHeight = this._getScrollHeight()\n    const maxScroll    = this._config.offset...

= '[data-widget=\"iframe\"]'\nconst SELECTOR_DATA_TOGGLE_CLOSE = '[data-widget=\"iframe-close\"]'\nconst SELECTOR_DATA_TOGGLE_SCROLL_LEFT = '[data-widget=\"iframe-scrollleft\"]'\nconst SELECTOR_DATA_TOGGLE_SCROLL_RIGHT = '[data-widget=\"iframe-scrollright\"]'\nconst SELECTOR_DATA_TOGGLE_FULLSCREEN = '[data-widget=\"iframe-fullscreen\"]'\nconst SELECTOR_CONTENT_WRAPPER = '.content-wrapper'\nconst SELECTOR_CONTENT_IFRAME = `${SELECTOR_CONTENT_WRAPPER} iframe`\nconst SELECTOR_TAB_NAV = `${SELECTOR_...