title: Purpose of 'content' in tailwind config
body: <p>I am using tailwind in a Nuxt app and had a warning about purge/content options changing in Tailwind CSS v3.0 and after changing purge to content or leaving it as it just did not change anything not even removed that warning.</p>
  <p>As far as I understand this option (content/purge) tells tailwind where to search its class names. But even without any option in that list, everything works just fine.</p>
  <p><strong>Can someone explain why nothing changes even if I am having 'content' empty?</strong></p>
  <p><em>tailwind.condig.js</em></p>
  <pre class="lang-js prettyprint-override"><code>module.exports = {
    mode: 'jit',
    content: [
      &quot;./components/**/*.{js,vue,ts}&quot;,
      &quot;./layouts/**/*.vue&quot;,
      &quot;./pages/**/*.vue&quot;,
      &quot;./plugins/**/*.{js,ts}&quot;,
      &quot;./nuxt.config.{js,ts}&quot;,
    ],
    // ...
  }
  </code></pre>