index temperature.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Temperature Converter</title>
    <style>
      body{
        padding: 30px 30px;
        
      }
      h1{
        text-align: center;
      }
      #container{

        text-align: center;
        background-color:aqua;
        padding: 40px;
      }
      .input-div{
        display: inline-block;
      }
      .inp{
        padding: 5px 10px;
        margin: 10px;
        font-size: 30px;
        font-weight: bold;
        text-align: center;
      }
      label{
        font-size: 30px;
      }




    </style>
</head>
<body>
  <h1>Temperature Converter</h1>
  <div id="container">
    <div class="input-div">
      <label>celsius</label><br>
      <input type="number" value="0" id="cel" class="inp">
    </div>
    <div class="input-div">
      <label>fahrenheit</label><br>
      <input type="number" value="32" id="fah" class="inp">
    </div>
  </div>
  <script>

    var cel = document.getElementById("cel");
    var fah = document.getElementById("fah");
    cel.addEventListener('input', function(){
      let c = this.value;
      let f = (c * 9/5)+32;
      if(!Number.isInteger(f)){
        f = f.toFixed(4);
      }
      fah.value = f;

    });
    fah.addEventListener('input', function(){
      let f = this.value;
      let c = (f-32) * 5/9;
      if(!Number.isInteger(c)){
        c = c.toFixed(4);
      }
      cel.value = c;


    });
  </script>
  
</body>
</html>