Untitled

<!DOCTYPE html>

<html>
    <head>
  <link rel="stylesheet" type"text/css" href="style.css">


    </head>
    <body>

 <section>


    <div class="cell"></div>
     <div class="cell"></div>
        <div class="cell"></div>
        <div class="cell"></div>
        <div class="cell"></div>
        <div class="cell"></div>
        <div class="cell"></div>
        <div class="cell"></div>
        <div class="cell"></div>
        <div class="cell"></div>
        <div class="cell"></div>
        <div class="cell"></div>
        <div class="cell"></div>
        <div class="cell"></div>
        <div class="cell"></div>
       <div class="cell"></div>

     <script>
      var allCells = document.getElementsByClassName("cell");
         var cellIndex = Math.floor(Math.random(1) * 16);


         math.random rgb([0, 255], [0, 255], [0, 255])


     </script>


        </section>


    </body>


</html>