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                <!doctype html>
<html lang="en">
    <title>Tip Calculator</title>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="" integrity="sha384-PsH8R72JQ3SOdhVi3uxftmaW6Vc51MKb0q5P2rRUpPvrszuE4W1povHYgTpBfshb" crossorigin="anonymous">

  <body class="bg-dark">
    <div class="container">
      <div class="row">
        <div class="col-md-6 mx-auto">
          <div class="card card-body text-center mt-5">
            <h1 class="heading display-5 pb-3">Tip Calculator</h1>
            <form id="tip-form">
              <div class="form-group">
                <div class="input-group">
                  <span class="input-group-addon">$</span>
                  <input type="number" class="form-control" id="billTotal" placeholder="Total Bill">
              <div class="form-group tipPersent">
                <div class="input-group">
                  <label for="">Tip:</label>

                  <input type="range" class="form-control" id="tipInput" value="0">
                  <span class="input-group-addon" id="tipOutput"></span>


            <!-- RESULTS -->
            <div id="results" class="pt-4">
              <div class="form-group">
                <div class="input-group">
                  <span class="input-group-addon">Tip amount</span>
                  <input type="number" class="form-control" id="tipAmount" disabled>

              <div class="form-group">
                <div class="input-group">
                  <span class="input-group-addon">Total Bill with Tip</span>
                  <input type="number" class="form-control" id="totalBillWithTip" disabled>


    <!-- Optional JavaScript -->
    <!-- jQuery first, then Popper.js, then Bootstrap JS -->
    <script src="" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
    <script src="" integrity="sha384-vFJXuSJphROIrBnz7yo7oB41mKfc8JzQZiCq4NCceLEaO4IHwicKwpJf9c9IpFgh" crossorigin="anonymous"></script>
    <script src="" integrity="sha384-alpBpkh1PFOepccYVYDB4do5UnbKysX5WZXm3XxPqe5iKTfUKjNkCk9SaVuEZflJ" crossorigin="anonymous"></script>



  #results {



document.querySelector('#tip-form').onchange = function(){

  var bill = Number(document.getElementById('billTotal').value);
  var tip = document.getElementById('tipInput').value;
  document.getElementById('tipOutput').innerHTML = `${tip}%`;
  var tipValue = bill * (tip/100)
  var finalBill = bill + tipValue
var tipAmount = document.querySelector('#tipAmount')
var totalBillWithTip = document.querySelector('#totalBillWithTip')

tipAmount.value = tipValue.toFixed(2);
 totalBillWithTip.value =finalBill.toFixed(2);

 //Show Results