Unhandled overflow behaviour on dropdown LI elements

[mwargan]

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Describe the issue

Current Behavior

Unhandled overflow behaviour on dropdown LI elements.

Expected Behavior

Handle overflow by wrapping.

Reproduction URL

Just go to the docs page and overfill an LI element https://picocss.com/docs/dropdown

Suggested fix:

/* Fix overflow on dropdown li elements */
details.dropdown summary+ul li,
details.dropdown summary+ul li>a {
  white-space: break-spaces;

  /* The below is not needed but is quite nice to limit absurdly big list results in the dropdown  */
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 9;
  overflow: hidden;
}