Is it possible to remove all CSS, instead of resetting to default?

On saving I export my CSS, then import it the next time I load

Read this please https://grapesjs.com/docs/modules/Storage.html

One example on those docs suggested just using the style attribute:

const editor = grapesjs.init({
  container: '#gjs',
  fromElement: 1,
  height: '100%',
  storageManager: { type: 0 },
  plugins: ['gjs-blocks-basic'],
  style: '* {display: none;}',
});

However, other style was still prepended. Should it be assumed that when importing style, it will always be prepended with the following?

* {
  box-sizing: border-box;
}
body {
  margin: 0;
}

This is the default CSS that you can change via protectedCss option, but again, if your purpose is to edit a previously created template, importing exported CSS is WRONG You might need to import HTML/CSS only on the creation of the template and this is ok, but later you should rely on the JSON created by the editor