title: materialize css: remove gap/space between grid
body: <p>Is there any idea how to remove gap/space between the grid?
  Here's an example of code for each columns, it will show the gap/space between grid</p>
  
  <pre><code>&lt;div class="row"&gt;
    &lt;div class="col s4"&gt;
      &lt;div class="card-panel light-blue"&gt;4&lt;/div&gt;
    &lt;/div&gt;
    &lt;div class="col s4"&gt;
      &lt;div class="card-panel light-blue"&gt;4&lt;/div&gt;
    &lt;/div&gt;
    &lt;div class="col s4"&gt;
      &lt;div class="card-panel light-blue"&gt;4&lt;/div&gt;
    &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/ZvcGO.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ZvcGO.jpg" alt="enter image description here"></a></p>