title: How to create a image frame by css?
body: <p>I want to try a design by CSS3 like a picture frame (like as following picture).</p>
  
  <p><a href="https://i.stack.imgur.com/nNWQ4.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/nNWQ4.jpg" alt="enter image description here"></a>
  I have tried following :</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="false" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>.frame_box li {
    border: 1px solid #000;
    height: 200px;
    width: 150px;
    display: inline-block;
    border-radius:4px;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;ul class="frame_box"&gt;
    &lt;li&gt;
      &lt;img src="a.jpg" alt="" /&gt;
    &lt;/li&gt;
    &lt;li&gt;
      &lt;img src="a.jpg" alt="" /&gt;
    &lt;/li&gt;
    &lt;li&gt;
      &lt;img src="a.jpg" alt="" /&gt;
    &lt;/li&gt;
    &lt;li&gt;
      &lt;img src="a.jpg" alt="" /&gt;
    &lt;/li&gt;
    &lt;li&gt;
      &lt;img src="a.jpg" alt="" /&gt;
    &lt;/li&gt;
    &lt;li&gt;
      &lt;img src="a.jpg" alt="" /&gt;
    &lt;/li&gt;
  &lt;/ul&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>But I can not do that. Please Help me. Thanks advance.</p>