title: Stray end tag but nothing was placed after </body> or </html>
body: <p>I've read other post that indicate the  or  tags were left unclosed or had something placed after the tag. Am unsure of any other cause as I get errors for Stray End Tags  from Line 78 to Line 96 (Starting from ng switch OS)</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;html data-ng-app=""&gt;
   &lt;head&gt;
       &lt;title&gt;Lab 3.4 - Registration Form Web App&lt;/title&gt;
       &lt;meta charset="utf-8" /&gt;
       &lt;meta name="viewport" content="width=device-width,
      initial-scale=1.0" /&gt;
  
       &lt;!-- Bootstrap --&gt;
       &lt;link href="css/bootstrap.min.css" rel="stylesheet" /&gt;
  
       &lt;!-- HTML5 Shim and Respond.js IE8 support of HTML5
      elements and media queries --&gt;
       &lt;!-- WARNING: Respond.js doesn't work if you view the
      page via file:// --&gt;
       &lt;!--[if lt IE 9]&gt;
       &lt;script src="js/html5shiv.js"&gt;&lt;/script&gt;
       &lt;script src="js/respond.min.js"&gt;&lt;/script&gt;
       &lt;![endif]--&gt;
  
  
       &lt;!-- jQuery – required for Bootstrap's JavaScript plugins) --&gt;
       &lt;script src="js/jquery.min.js"&gt;&lt;/script&gt;
       &lt;!-- All Bootstrap plug-ins file --&gt;
       &lt;script src="js/bootstrap.min.js"&gt;&lt;/script&gt;
       &lt;!-- Basic AngularJS --&gt;
       &lt;script src="js/angular.min.js"&gt;&lt;/script&gt;
  
  &lt;/head&gt;
  
  &lt;body&gt;
  
  
      &lt;h1&gt;Phone Cloud Registration App&lt;/h1&gt;  
  
      &lt;form&gt;
  
          &lt;!--Note to self: Labels are associated with input's id and not name attirbute--&gt;
          &lt;p&gt;
              &lt;label for="username"&gt;Enter username: &lt;/label&gt;
              &lt;input type="text" id ="username" data-ng-model="username"/&gt;
          &lt;/p&gt;
  
          &lt;p&gt;
              &lt;label for="password"&gt;Enter password: &lt;/label&gt;
              &lt;input type="text" id="password" data-ng-model="password"/&gt;
          &lt;/p&gt;
  
          &lt;p&gt;
              &lt;label for="rpassword"&gt;Re-enter password: &lt;/label&gt;
              &lt;input type="text" id="rpassword" data-ng-model="rpassword" /&gt;
  
              &lt;span data-ng-show="rpassword != password" data-ng-model-options = "{updateOn: 'blur'}"&gt;Password does not match the above.&lt;/span&gt;
          &lt;/p&gt;
  
          &lt;br/&gt;
  
          &lt;h2&gt;Phone Operating System&lt;/h2&gt;
  
          &lt;!--Radio Buttons--&gt;
          &lt;input type="radio" name="OS" value="Android" data-ng-model="OS" required/&gt;Android
  
          &lt;input type="radio" name="OS" value="IOS" data-ng-model="OS"/&gt;IOS
  
          &lt;input type="radio" name="OS" value="Windows" data-ng-model="OS"/&gt;Windows
  
          &lt;p&gt;Phone Model&lt;/p&gt;
  
          &lt;label for="phoneModel"&gt;
              Select phone model: 
          &lt;/label&gt;
  
          &lt;!--Drop Down List --&gt;
          &lt;div&gt;
  
              &lt;select name = "phoneModel" id = "phoneModel"&gt;
  
                  &lt;div data-ng-switch = "OS"&gt;
  
                      &lt;div data-ng-init = "AndroidModels = ['HTC 8X','Samsung Galazy 7','Sony Xperia Z5']" data-ng-switch-when = "Android"&gt;
  
                          &lt;option data-ng-repeat = "a in AndroidModels"&gt;{{a}}&lt;/option&gt;
  
                      &lt;/div&gt;
  
  
                      &lt;div data-ng-init = "IOSModels = ['Iphone 6','Iphone 6s','Iphone 6s Plus']" data-ng-switch-when = "IOS"&gt;
  
                          &lt;option data-ng-repeat="b in IOSModels"&gt;{{b}}&lt;/option&gt;
                      &lt;/div&gt;
  
                      &lt;div data-ng-init = "WindowsModels =['HTC One M9','Microsoft 950','Microsoft 950XL']" data-ng-switch-when="Windows"&gt;
  
                          &lt;option data-ng-repeat = "c in WindowsModels"&gt;{{c}}&lt;/option&gt;
                      &lt;/div&gt;
                  &lt;/div&gt;
              &lt;/select&gt;
  
          &lt;/div&gt;
  
          &lt;br/&gt;
          &lt;p&gt;Summary&lt;/p&gt;
  
          &lt;ul&gt;
              &lt;li&gt;Username: {{username}}&lt;/li&gt;
              &lt;li&gt;OS: {{OS}}&lt;/li&gt;
              &lt;li&gt;Phone: {{phoneModel}}&lt;/li&gt;
          &lt;/ul&gt;
  
      &lt;/form&gt;
  
  
      &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p><em>*EDIT: Issue was with nesting <code>&lt;div&gt;</code> tags and any other tag that isn't <code>&lt;option&gt;</code> within the <code>&lt;select&gt;</code> tag. THANK YOU SO MUCH KIND SIR.</em></p>