<!DOCTYPE html>
<html>
  <head>
    <!-- Firebase App (the core Firebase SDK) must be listed first -->
    <script src="https://www.gstatic.com/firebasejs/7.15.1/firebase-app.js"></script>
    <!-- Add Firebase Authentication -->
    <script src="https://www.gstatic.com/firebasejs/7.15.1/firebase-auth.js"></script>

    <meta name="viewport" content="width=device-width, initial-scale=1">
    <script src="https://cdn.firebase.com/libs/firebaseui/3.5.2/firebaseui.js"></script>
    <link type="text/css" rel="stylesheet" href="https://cdn.firebase.com/libs/firebaseui/3.5.2/firebaseui.css" />
    <meta charset="UTF-8">
    <title>Capstone</title>
    <link rel="stylesheet" href="homepage.css">
    <script src="homepage.js"></script>
  </head>
  
  <body onload="loadSignIn()">
    <div class="bg">
      <h1>Landing Page</h1>
      <div id="firebaseui-auth-container"></div>
      <button class="button button1" onclick="logout()">Logout</button>
    </div>
  </body>
</html>
<!DOCTYPE html>
<html>
  <head>
    <!-- Firebase App (the core Firebase SDK) must be listed first -->
    <script src="https://www.gstatic.com/firebasejs/7.15.1/firebase-app.js"></script>
    <!-- Add Firebase Authentication -->
    <script src="https://www.gstatic.com/firebasejs/7.15.1/firebase-auth.js"></script>

    <meta name="viewport" content="width=device-width, initial-scale=1">
    <script src="https://cdn.firebase.com/libs/firebaseui/3.5.2/firebaseui.js"></script>
    <link type="text/css" rel="stylesheet" href="https://cdn.firebase.com/libs/firebaseui/3.5.2/firebaseui.css" />
    <meta charset="UTF-8">
    <title>Capstone</title>
    <link rel="stylesheet" href="homepage.css">
    <script src="homepage.js"></script>
  </head>
  
  <body onload="loadSignIn()">
    <div class="bg">
      <h1>Landing Page</h1>
      
      <!--Provide sign in options for the user-->
      <div id="firebaseui-auth-container"></div>

      <button class="button button1" onclick="logout()">Logout</button>
    </div>
  </body>
</html>
Remove start function from onload.
Remove start function from onload.
