title: Making Blogger post and page background transparent
body: <p>I need to get the area outlined in red in the image below completely transparent. I'm new to this HTML stuff, but I've tried searching for transparency and opacity in the HTML editing section and I don't seem to be able to find the correct bit to edit.
  If there's a simple CSS code someone could provide me with that would be even better.</p>
  
  <p>I'm using the Picture Window theme on Blogger.</p>
  
  <p>Thanks :)</p>
  
  <p><a href="https://i.stack.imgur.com/DNrqA.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/DNrqA.jpg" alt="enter image description here"></a></p>