title: Multiple (properly aligned) sidebars in shiny
body: <p>I have written two <code>sidebarLayout</code> functions, with <code>position="left"</code> as parameter for one and <code>position="right"</code> for the other. The second <code>sidebar</code> appears on the right side, but below the first <code>sidebar</code> as shown in the figure below.</p>
  
  <p><a href="https://i.stack.imgur.com/XCavK.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/XCavK.png" alt="enter image description here"></a></p>
  
  <p>How to display the second sidebar at the same vertical level as first sidebar?</p>