title: CSS border shape - how to cut off rectangle right upper corner
body: <p>I just wondering is there way to make a tab like shape border? 
  To be more clear I am to draw the shape in asterisks. I mean this border shape.</p>
  
  <pre><code>*********************
  ***********************
  *************************
  ***************************
  ***************************
  ***************************
  ***************************
  ***************************
  </code></pre>
  
  <p>For this how in CSS cut off the rectangle right upper corner? Or what is a more optimal way?</p>