Avoid framing your page meta http- equiv Frame Options content SAME-OR

Avoid framing your page:

<meta http-­equiv="X­‐Frame­‐Options" content="SAME-ORIGIN">

OR:

<style>
  html { display:none;}
</style>
<script>
  if (self == top) {
    document.documentElement.style.display = 'block ';
  } else {
    top.location = self.location;
  }
</script>