feat: add noopener to the reference link

Author: edysegura

crypto/index.html

@@ -17,7 +17,7 @@
  <h1>HTML5 Crypto API</h1>
  <p>Encrypt text using the Web Crypto API</p>
  </header>
- <form onsubmit="return false">
+ <form>
  <div class="grid">
  <label for="text">
  Text to encrypt
@@ -40,8 +40,11 @@ <h1>HTML5 Crypto API</h1>
  </article>
  <footer>
  <small>
- Using <a href="https://picocss.com" target="_blank">PicoCSS</a> for
- styling
+ Using
+ <a rel="noopener" href="https://picocss.com" target="_blank"
+ >PicoCSS</a
+ >
+ for styling
  </small>
  </footer>
  </main>