.insimg{
    float: left;
    margin-right: 20px;
    margin-bottom: 20px;
    display: inline;
  } 
  
  @media (min-width: 320px) and (max-width: 767px) {
      .insimg{
          float:none;
          display:table;
          margin: 0 auto;
      }
  }