Flexbox lines centered content

[mhulse]

http://codepen.io/jackbrewer/pen/yOPege

.has-lines {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
      -ms-flex-align: center;
          align-items: center;
  text-align: center;
  -webkit-box-pack: center;
  -webkit-justify-content: center;
      -ms-flex-pack: center;
          justify-content: center;
}
.has-lines:before,
.has-lines:after {
  content: '';
  -webkit-box-flex: 1;
  -webkit-flex-grow: 1;
      -ms-flex-positive: 1;
          flex-grow: 1;
  height: 1px;
  background: #ccc;
  min-width: 20px;
  display: inline-block;
  vertical-align: middle;
}
.has-lines:before {
  margin-right: 20px;
}
.has-lines:after {
  margin-left: 20px;
}
body {
  padding: 30px;
}
.description {
  color: #777;
  max-width: 500px;
  margin: 50px auto;
}

… and:

<h1 class="has-lines">Example Title</h1>
<h1 class="has-lines">Fusce dapibus, tellus ac cursus commodo, tortor mauris</h1>
<p class="has-lines">or</p>
<p class="has-lines">Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus donec sed odio dui.</p>
<p class="has-lines">
  <button>Action here</button>
</p>