Horizontally align divs

by Divy Shah

HTML

<span class="xyzContainer">
  <div id="start" class="side left">
    <span>left</span>
  </div>
  <div id="end" class="side right">
    <span>right</span>
  </div>
</span>

CSS

.xyzContainer
{
  -ms-box-orient: horizontal;
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -moz-flex;
  display: -webkit-flex;
  display: flex;
  margin:0px;
  padding:0px;
  
  -webkit-flex-flow: row wrap;
  flex-flow: row wrap;
}

.side {
  height: 100px;
  width: 400px;
  float: left;
}

.left {
  background-color: red;
}

.right {
  background-color: blue;
}

span {
  text-align: center;
  display: block;
  margin: 3px auto;
}

@media screen and (max-width: 815px) {
  .left
  {
    order: 2;
  }
}