nextra@3.0.0-alpha.39

Major Changes

• 47b125d: fix global style conflicts for
  <a>/<button>/<summary>/<input>/[tabindex]:not([tabindex='-1']

• ba30c6c: use render props for className with selected, disabled and
  hover state for <Tab>

• 2872606: remove image prop from <Card> component, image will be showed
  based on truthiness children prop now

  set icon as optional prop