Is it possible in pure css to change the background-color of the body element depending of the id (or class) of the first div inside the body ?
For instance :
<body> 
  // background-color is black
  <div id="abc"> ... </div>
</body>
<body> 
  // background-color is red
  <div id="cde"> ... </div>
</body>
 
     
    