index.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <link rel="stylesheet" href="style.css">
  <title>Document</title>
</head>
<body style="padding-bottom: 1000px;">
  <p id="p1"></p>
  <p id="p2"></p>
  <p id="p3"></p>

  <label>Username: </label>
  <input type="text" id="username"><br>
  <label>Age: </label>
  <input style="margin: 10px 38px 10px;" type="text" id="age"><br>

  <label for="male">Male:</label>
  <input type="radio" name="gender" id="male">
  <label for="female">Female:</label>
  <input type="radio" name="gender" id="female"> <br>
  <button style="margin: 10px 195px;" type="button" id="submit-button">submit</button>
  <p id="welcome"></p>
  <p id="age-tom"></p>
  <hr>
  <label>Dollar: </label>
  <input type="text" id="dollar"><br>
  <button style="margin: 10px 166px;" type="button" id="convert-button">convert</button>
  <p id="peso"></p>

  <hr>
  <label>Find the Hypotenuse of Right Triangle</label> <br>
  <label>A: </label>
  <input style="margin-top: 20px; width:100px" type="text" id="var_a"><br>
  <label>B: </label>
  <input style="margin-top: 20px; width:100px" type="text" id="var_b"><br>
  <button style="margin: 10px 60px;" type="button" id="compute-button">compute</button>
  <p id="hypotenuse"></p>

  <hr>
  <p id="title">High Score:</p>
  <p id="score">0</p>
  <label style="display:block;" id="count">0</label>
  <div class="buttons">
    <button id="decrease">decrease</button>
    <button id="reset">reset</button>
    <button id="increase">increase</button>
  </div>
  <hr>
  <label for="grade">Grade:</label>
  <input type="text"  id="grade"> <br>
  <button style="margin: 10px 174px;" type="button" id="check-button">check</button>
  <p id="show-result"></p>
  <p id="pattern"></p>
  <script src="index.js"></script>
</body>
</html>