JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"></script>
<div class='container'>
  <div class='panel panel-default'>
    <div class='panel-heading text-center panel-relative'>
    <button class='btn btn-danger btn-right' onclick="location.href='past_sched.php'">Go to Past Schedule</button>
      <h4>Present Schedule</h4>
    </div>
  </div>
</div>

CSS

.panel-relative{
  position: relative;
}
.btn-right{
  position: absolute;
  right: 15px;
}