Comments Width '100%' Not Working On Mobile

[paujur]

<FacebookProvider appId='XXXXXXXXXXXXXXXX'>
  <Comments
    href={postURL}
    numPosts={5}
    width={'100%'}
  />
</FacebookProvider>

Above code seems to work well on desktop as well as desktop via DevTools dimensioned for a smart phone device, however when testing on an actual mobile phone (iPhone 13), it's only about 2/3's wide.