<apex:page >
      <script src="{!URLFOR($Resource.recaptcha_wc, 'webcomponentsjs/webcomponents-lite.min.js')}"></script>
      <link rel="import" href="{!URLFOR($Resource.recaptcha_wc, 're-captcha/re-captcha.html')}"/>
      <re-captcha sitekey="6LdAph4UAAAAAFMj2Qk6huZS27MppjnrkYlEeYNE"></re-captcha>
</apex:page>