Sure, here's an example HTML interface that lets a user browse events by crawling different Nostr relays:

```html

Nostr Event Browser

```

This HTML interface includes a form for entering a search query, which is used to search for events on each Nostr relay listed in the `relays` array. The `createEventElement` function is used to create an HTML element for each event that is found, and these elements are added to the `resultsContainer` div.