If you format your data structures like this:

  var bio = {
     "name": "Surbhi Oberoi",
     "role": "Developer"
     }

then please be consistent and format your CSS like this:

  h1 {
      font-size: 3em;
      color: #000000;
      }

and your functions like this:

  function s(a) {
    return a.split('').reverse().join('');
    }