title: text shadow in react native
body: <p>in my site i have a title with this text shadow:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>h1.title {
   text-shadow: -1px 1px 10px rgba(0, 0, 0, 0.75)
   }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;h1 class="title"&gt;title&lt;/h1&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>I want do the same in my react native app.</p>
  
  <p>I've seen the properties:</p>
  
  <pre><code>textShadowColor color
  textShadowOffset {width: number, height: number}
  textShadowRadius number
  </code></pre>
  
  <p>but I don't knows how to have the same effect of html.</p>
  
  <p>How can I do?</p>