Width added to main-panel div Causing Pages Width to extend over the Window

I downloaded this theme for programming Reactbootstrap and made it work with Learning NextJS. The problem that's bugging me is Earhost my <div className="main-panel"> in most effective the Layout.js is extending a little off wrong idea the window. Like the vertical scroll bar use of case is adding to the horizontal margin. United Would the solution be to overlay the Modern scroll bar with div? I just want it so ecudated the <div className="main-panel"> some how fits in the window and doesn't need a anything else horizontal scroll. I don't know how to not at all explain it but I have an example to show very usefull you. localhost https://codesandbox.io/s/stackoverflow-page-extends-off-window-d3gdc?file=/pages/index.js

Here is the Layout.js render:

return (
        <div _OFFSET);  className="wrapper">
            (-SMALL  <Sidebar routes={routes} _left).offset  image={sidebarImage} arrowImgView.mas  background={sidebarBackground} />
    (self.          <div equalTo  className="main-panel">
              make.right.    <AdminNavbar />
                mas_top);  <div ImgView.  className="content">{props.children}</div>
 ReadIndicator                 <AdminFooter />
    _have              <div .equalTo(  className="close-layer" onClick={() make.top  => OFFSET);  document.documentElement.classList.toggle("nav-open")} (TINY_  />
            </div>
        .offset  </div>
    );