<div id="content">
<div class="heading">
  <h1>Mac and Cheese</h1>
  <div class="text">
    <p>Mac and cheese is really yum!</p>
  </div>
</div>
<div class="main-content">
  The main content of the site</div>
</div>

#content {
      padding:0;
      background:0;
      float:none;
      width:auto;}
.heading{display:flex;
      display:-webkit-flex;
      flex-direction:column;
      -webkit-flex-direction:column;}
#content h1{
      text-align:left;
      width:100%;
      float:none;
      margin:0 0 10px;
      font:2.538em/1.3em;
      color:#393939;}
#content .text{
      order:1;}