title: How to add margin for Button inside Material-UI, with spacing attribute?
body: <p>I have a button inside a paper element in material ui. I want to add some margin-top to the Button, that it has some spacing between the FullWidthTabs component and the button.</p>
  <p>Code:</p>
  <pre class="lang-js prettyprint-override"><code>    import React from 'react';
      import { makeStyles } from '@material-ui/core/styles';
      import Box from '@material-ui/core/Box';
      import Button from '@material-ui/core/Button';
      import FullWidthTabs from './FullWidthTabs';
      import Paper from '@material-ui/core/Paper';
      import { spacing } from '@material-ui/system';
      
      const useStyles = makeStyles(theme =&gt; ({
        root: {
          width: &quot;70vw&quot;,
        },
      }));
      
      export default function Bookingbox() {
        const classes = useStyles();
      
        return (
          &lt;div&gt;
            &lt;Box mx=&quot;auto&quot; className={classes.root}&gt;
              &lt;Paper elevation={20} &gt;
                &lt;FullWidthTabs /&gt;
                &lt;Button variant=&quot;contained&quot; 
                          color=&quot;green&quot;
                          className={classes.button} 
                          fullWidth=&quot;true&quot;
                          mt={1}
                          style={{
                              backgroundColor: &quot;green&quot;,
                              color: &quot;white&quot;
                          }}&gt;
                      Suchen
                  &lt;/Button&gt;
              &lt;/Paper&gt;
            &lt;/Box&gt;
          &lt;/div&gt;
        );
      }
  </code></pre>
  <p>According to the material-ui docs (<a href="https://material-ui.com/system/spacing/" rel="noreferrer">https://material-ui.com/system/spacing/</a>), spacing should work if I add mt to my button. I did this, and there is no result.</p>
  <p>Disclaimer: I have not created an own Theme yet, but from my POV this is not necessary. Maybe the errors lies within not having an own theme.</p>