remove stickiness of toolbar to avoid breaking the layout

clicking on a link with a URI fragment (e.g. https://docs.pybricks.com/en/latest/parameters.html#pybricks.parameters.Port)
inside the documentation iframe breaks the layout.
The browser seems to force the parent frame to scroll to the position as well.
As the toolbar is fixed, the rest of the content is scrolled under it.
Rerendering after the link click fixes the layout (at least if done manually).
But a more elegant solutions is to remove the absolute positioning of the toolbar.
It is not really necessary to pin it, as the rest of the layout always
spans over the complete width and height of the browser window.

src/components/Toolbar.tsx

@@ -18,7 +18,6 @@ class Toolbar extends React.Component {
         return (
             <Navbar
                 onContextMenu={(e): void => e.preventDefault()}
-                fixedToTop={true}
                 className="no-box-shadow"
             >
                 <Navbar.Group>

src/index.scss

@@ -28,8 +28,6 @@ $status-bar-height: 3vh;
 body {
     // no scrolling of the page
     overflow: hidden;
-    // See https://blueprintjs.com/docs/#core/components/navbar
-    padding-top: $pt-navbar-height;
 }
 
 // Utility classes