title: How to completely remove margins and make div full width
body: <p>hello i am workin on a page which i have used a 2 column and 1 row responsive grids using html and css</p>
  
  <p>the grids works alright, but then i have noticed there is a margin on the left and right of this grids.</p>
  
  <p>i am trying to eliminate this margins, but dsent work for me</p>
  
  <pre><code>&lt;style&gt;
  /*  SECTIONS  */
  .section {
      clear: both;
      padding: 0px;
      margin: 0px;
  }
  
  /*  COLUMN SETUP  */
  .col {
      display: block;
      float:left;
      margin: 1% 0 1% 0%;
  }
  .col:first-child { margin-left: 0; }
  
  /*  GROUPING  */
  .group:before,
  .group:after { content:""; display:table; }
  .group:after { clear:both;}
  .group { zoom:1; /* For IE 6/7 */ }
  
  /*  GRID OF TWO  */
  .span_2_of_2 {
      width: 100%;
  }
  .span_1_of_2 {
      width: 50%;
  }
  
  /*  GO FULL WIDTH AT LESS THAN 480 PIXELS */
  
  @media only screen and (max-width: 480px) {
      .col { 
          margin: 1% 0 1% 0%;
      }
  }
  
  @media only screen and (max-width: 480px) {
      .span_2_of_2, .span_1_of_2 { width: 100%; }
  }
  
  &lt;/style&gt;
  
  
  &lt;div class="section group"&gt;
      &lt;div class="col span_1_of_2"&gt;
      This is column 1
      &lt;/div&gt;
      &lt;div class="col span_1_of_2"&gt;
      This is column 2
      &lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>with the madding and padding both set to zero, please how can i make sure this margins on the left and right of my grids are off.
  this is a link to the page and a screenshot too</p>
  
  <pre><code>http://andymurphy.tv/index.php/landing/
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/YgXw9.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/YgXw9.png" alt="enter image description here"></a></p>