Twitter Bootstarp v2.3.2 with panels 3

HTML

<link rel="stylesheet" href="http://getbootstrap.com/2.3.2/assets/css/bootstrap.css">
<link rel="stylesheet" href="http://getbootstrap.com/2.3.2/assets/css/bootstrap-responsive.css">
<script src="http://getbootstrap.com/2.3.2/assets/js/bootstrap.js"></script>
<div class="panel panel-success">
  <div class="panel-heading">
    <h3 class="panel-title">Panel title</h3>
  </div>
  <div class="panel-body">
    Panel content
  </div>
  <div class="panel-footer">Panel footer</div>
</div>

CSS

.panel {
  margin-bottom: 100px;
  background-color: #ffffff;
  border: 1px solid #dddddd;
  border-radius: 4px;
  -webkit-box-shadow: 0 1px 1px rgba(0, 0, 0, 0.05);
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.05);
}

.panel-body {
  padding: 15px;
}

.panel-body:before,
.panel-body:after {
  display: table;
  content: " ";
}

.panel-body:after {
  clear: both;
}

.panel-body:before,
.panel-body:after {
  display: table;
  content: " ";
}

.panel-body:after {
  clear: both;
}

.panel > .table {
  margin-bottom: 0;
}

.panel > .list-group {
  margin-bottom: 0;
}

.panel > .list-group .list-group-item {
  border-width: 1px 0;
}

.panel > .list-group .list-group-item:first-child {
  border-top-right-radius: 0;
  border-top-left-radius: 0;
}

.panel > .list-group .list-group-item:last-child {
  border-bottom: 0;
}

.panel-heading + .list-group .list-group-item:first-child {
  border-top-width: 0;
}

.panel > .table {
  margin-bottom: 0;
}

.panel > .panel-body + .table {
  border-top: 1px solid #dddddd;
}

.panel-heading {
  padding: 10px 15px;
  background-color: #f5f5f5;
  border-bottom: 1px solid #dddddd;
  border-top-right-radius: 3px;
  border-top-left-radius: 3px;
}

.panel-title {
  margin-top: 0;
  margin-bottom: 0;
  font-size: 16px;
}

.panel-title > a {
  color: inherit;
}

.panel-footer {
  padding: 10px 15px;
  background-color: #f5f5f5;
  border-top: 1px solid #dddddd;
  border-bottom-right-radius: 3px;
  border-bottom-left-radius: 3px;
}

.panel-group .panel {
  margin-bottom: 0;
  overflow: hidden;
  border-radius: 4px;
}

.panel-group .panel + .panel {
  margin-top: 5px;
}

.panel-group .panel-heading {
  border-bottom: 0;
}

.panel-group .panel-heading + .panel-collapse .panel-body {
  border-top: 1px solid #dddddd;
}

.panel-group .panel-footer {
  border-top: 0;
}

.panel-group .panel-footer + .panel-collapse .panel-body {
  border-bottom: 1px solid #dddddd;
}

.panel-primary {
  border-color: #428bca;
}

.panel-primary > .panel-heading {
  color:...