Bootstrapでコンテナーを垂直方向に中央揃えするにはどうすればよいですか？

.jumbotron {
  height:100%;
  width:100%;
}
.container {
  width:1025px;
}
.jumbotron .container {
  max-width: 100%;
} 

<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.0.0/css/bootstrap.min.css" rel="stylesheet"/>
<div class="jumbotron">
    <div class="container text-center">
        <h1>The easiest and powerful way</h1>
        <div class="row">
            <div class="col-md-7">
                 <div class="top-bg"></div>
            </div>

            <div class="col-md-5 iPhone-features" style="margin-left:-25px;">
                <ul class="top-features">
                    <li>
                        <span><i class="fa fa-random simple_bg top-features-bg"></i></span>
                        <p><strong>Redirect</strong><br>Visitors where they converts more.</p>
                    </li>
                    <li>
                        <span><i class="fa fa-cogs simple_bg top-features-bg"></i></span>
                        <p><strong>Track</strong><br>Views, Clicks and Conversions.</p>
                    </li>
                    <li>
                        <span><i class="fa fa-check simple_bg top-features-bg"></i></span>
                        <p><strong>Check</strong><br>Constantly the status of your links.</p>
                    </li>
                    <li>
                        <span><i class="fa fa-users simple_bg top-features-bg"></i></span>
                        <p><strong>Collaborate</strong><br>With Customers, Partners and Co-Workers.</p>
                    </li>
                        <a href="pricing-and-signup.html" class="btn-primary btn h2 lightBlue get-Started-btn">GET STARTED</a>
                        <h6 class="get-Started-sub-btn">FREE VERSION AVAILABLE!</h6>
                </ul>
            </div>
        </div>
    </div>
</div>

   
html, body{height:100%; margin:0;padding:0}
 
.container-fluid{
  height:100%;
  display:table;
  width: 100%;
  padding: 0;
}
 
.row-fluid {height: 100%; display:table-cell; vertical-align: middle;}
 
 

.centering {
  float:none;
  margin:0 auto;
}

Now call in your page 

<div class="container-fluid">
    <div class="row-fluid">
        <div class="centering text-center">
           Am in the Center Now :-)
        </div>
    </div>
</div>

body {
  display: table;
  position: absolute;
  height: 100%;
  width: 100%;
}

.jumbotron {
   display: table-cell;
   vertical-align: middle;
}

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<div class="jumbotron vertical-center">
  <div class="container text-center">
    <h1>The easiest and powerful way</h1>
    <div class="row">
      <div class="col-md-7">
        <div class="top-bg">Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</div>
      </div>

      <div class="col-md-5 iPhone-features">
        <ul class="top-features">
          <li>
            <span><i class="fa fa-random simple_bg top-features-bg"></i></span>
            <p><strong>Redirect</strong><br>Visitors where they converts more.</p>
          </li>
          <li>
            <span><i class="fa fa-cogs simple_bg top-features-bg"></i></span>
            <p><strong>Track</strong><br>Views, Clicks and Conversions.</p>
          </li>
          <li>
            <span><i class="fa fa-check simple_bg top-features-bg"></i></span>
            <p><strong>Check</strong><br>Constantly the status of your links.</p>
          </li>
          <li>
            <span><i class="fa fa-users simple_bg top-features-bg"></i></span>
            <p><strong>Collaborate</strong><br>With Customers, Partners and Co-Workers.</p>
          </li>
          <a href="pricing-and-signup.html" class="btn-primary btn h2 lightBlue get-Started-btn">GET STARTED</a>
          <h6 class="get-Started-sub-btn">FREE VERSION AVAILABLE!</h6>
        </ul>
      </div>
    </div>
  </div>
</div>

.parent-container {
    position: relative;
    height:100%;
    width: 100%;
}

.child-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

<div class="parent-container">
    <div class="child-container">
        <h2>Header Text</h2>
        <span>Some Text</span>
    </div>
</div>

.jumbotron{
  height:100%;
  width:100%;
}

<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"></script>    
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet"/>

<body>
  <div class="jumbotron">
    <div class="d-table w-100 h-100">
      <div class="d-table-cell w-100 h-100 align-middle">
        <h5>
          your stuff...
        </h5>
        <div class="container">
          <div class="row">
            <div class="col-12">
              <p>
                More stuff...
              </p>
            </div>
          </div>
        </div>
      </div>
    </div>
  </div>
</body>

/* columns of same height styles */

.row-full-height {
  height: 100%;
}
.col-full-height {
  height: 100%;
  vertical-align: middle;
}
.row-same-height {
  display: table;
  width: 100%;
  /* fix overflow */
  table-layout: fixed;
}
.col-xs-height {
  display: table-cell;
  float: none !important;
}

@media (min-width: 768px) {
  .col-sm-height {
    display: table-cell;
    float: none !important;
  }
}
@media (min-width: 992px) {
  .col-md-height {
    display: table-cell;
    float: none !important;
  }
}
@media (min-width: 1200px) {
  .col-lg-height {
    display: table-cell;
    float: none !important;
  }
}
/* vertical alignment styles */

.col-top {
  vertical-align: top;
}
.col-middle {
  vertical-align: middle;
}
.col-bottom {
  vertical-align: bottom;

<div class="container">

<h2>Demo 1</h2>
<div class="row">
  <div class="row-same-height">
    <div class="col-xs-3 col-xs-height">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed tempus tincidunt porttitor. Praesent vehicula aliquam enim. Fusce non luctus eros, sit amet consequat velit. Pellentesque volutpat est et est imperdiet pharetra. Integer vestibulum feugiat malesuada. Proin a felis ut libero vestibulum fermentum ut sit amet est. Morbi placerat eget lacus sed sagittis. Nullam eu elit gravida arcu viverra facilisis. Quisque laoreet enim neque, ut consequat sem tincidunt at. Fusce lobortis scelerisque libero, eget vulputate neque. </div>
    <div class="col-xs-3 col-xs-height col-top">2st column</div>
    <div class="col-xs-3 col-xs-height col-middle">3st column</div>
    <div class="col-xs-3 col-xs-height col-bottom">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed tempus tincidunt porttitor. Praesent vehicula aliquam enim. Fusce non luctus eros, sit amet consequat velit. Pellentesque volutpat est et est imperdiet pharetra.</div>
  </div>
</div><!-- ./row -->
</div><!-- ./container -->