title: css is auto-commenting php code?
body: <p>I have an issue with CSS..</p>
  
  <p>By using the following code:</p>
  
  <pre><code>&lt;div class="divisor"&gt;
  &lt;p&gt;
  &lt;?php if (isset($_SESSION['invalid'])) { echo 'test'; } ?&gt;
  &lt;/p&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>The result on the generated page in browser is the following:</p>
  
  <pre><code>&lt;!--?php if (isset($_SESSION['invalid'])) { echo 'test'; } ?--&gt;
  </code></pre>
  
  <p>Practically, the browser is auto-commenting out my php code, with the result of skipping the whole code from executing it.</p>
  
  <p>What could be the issue?</p>
  
  <p>the CSS code I only defined some margins with:</p>
  
  <pre><code>.divisor p {
  margin-top: 5px;
  margin-left: 5px;
  }
  </code></pre>