title: Blur Effect with CSS
body: <p>I'm trying to achieve this with cssn (ignore the white selector boxes)</p>
  
  <p><a href="https://i.stack.imgur.com/0rOmZ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/0rOmZ.png" alt="enter image description here"></a></p>
  
  <p>Basically, I have html similar to the following:</p>
  
  <pre><code>&lt;div class="container&gt;
     &lt;div class="card"&gt;
        &lt;h1&gt; Blog &lt;/h1&gt;
        &lt;p&gt; Quack &lt;/p&gt;
     &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>Now my css</p>
  
  <pre><code>.container {
     background-image: // the image
     display: flex;
     justify-content: center;
     align-items: center;
  }
  
  .card {
      height 200px;
      width: 300px;
      background-color: rgba(213, 231, 230, 0.51);
  } 
  </code></pre>
  
  <p>Now this css would put a transparent green card on top of the image. However, I don't just want it to be transparent green. I want it to have a "blur" effect.</p>
  
  <p>How do I go about doing that?</p>