title: Flashlight effect with css
body: <p>Here's what I'm trying to do: A solid grey background with a semi-eclipse (i.e. half an eclipse) of light starting from the centre of the page and ending at the top, so it looks as if there is a torch shining upwards from the centre of the page.</p>
  
  <p>I've tried using SVG instead of css as I thought it might be easier, but I've ran into a few problems. Can anyone point me in the right direction?</p>
  
  <p>Edit: Here's an image of what I'm trying to achieve:
  <img src="https://i.stack.imgur.com/A8zXa.png" alt="enter image description here"></p>