title: How to change backgrond-color of any website page through url?
body: <p>I am facing a problem related to  css.My question is that I want to change background-color to black of any website page through url. I want this for study better to protect my eyes meanwhile I have eye problem. So what code to apply in the url to show the page black meanwhile we use this css rule like body <strong>{
  background-color:#00000;}</strong> to output .I have attached two images for it to clear more better.Hope will get response as soon as possible.Thank you too much!
  <img src="https://i.stack.imgur.com/6sHvt.jpg" alt="enter image description here">
  <img src="https://i.stack.imgur.com/IEFUx.jpg" alt="enter image description here"></p>