diff --git a/web/index.html b/web/index.html
index 8f0c1bf4..bfd806dd 100644
--- a/web/index.html
+++ b/web/index.html
@@ -1,4 +1,3 @@
-
 <!-- 
 
 Note:
@@ -30,6 +29,7 @@ DEALINGS IN THE SOFTWARE.
 
 <!DOCTYPE html>
 <html lang="en">
+
 <head>
   <meta charset="UTF-8">
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
@@ -41,136 +41,201 @@ DEALINGS IN THE SOFTWARE.
   <link rel="stylesheet" href="static/highlight.js/github-dark-dimmed.min.css">
   <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
 
-<style>
-@import url("https://fonts.googleapis.com/css2?family=Lato:wght@300&family=PT+Mono&display=swap");
+  <style>
+    @import url("https://fonts.googleapis.com/css2?family=Lato:wght@300&family=PT+Mono&display=swap");
 
-.hljs{display:block;overflow-x:auto;padding:.5em;background:#282a36}
-.hljs-keyword,.hljs-selector-tag,.hljs-literal,.hljs-section,.hljs-link{color:#73cbde}
-.hljs,.hljs-subst{color:#f8f8f2}
-.hljs-string,.hljs-title,.hljs-name,.hljs-type,.hljs-attribute,.hljs-symbol,
-.hljs-bullet,.hljs-addition,.hljs-variable,.hljs-template-tag,.hljs-template-variable{color:#f1fa8c}
-.hljs-comment,.hljs-quote,.hljs-deletion,.hljs-meta{color:#6272a4}
-.hljs-keyword,.hljs-selector-tag,.hljs-literal,.hljs-title,.hljs-section,.hljs-doctag,
-.hljs-type,.hljs-name,.hljs-strong{font-weight:bold}.hljs-emphasis{font-style:italic}
+    .hljs {
+      display: block;
+      overflow-x: auto;
+      padding: .5em;
+      background: #282a36
+    }
 
-:root {
-  --window-width: 80%;
-}
+    .hljs-keyword,
+    .hljs-selector-tag,
+    .hljs-literal,
+    .hljs-section,
+    .hljs-link {
+      color: #73cbde
+    }
 
-body {
-background-color: #778abb;
-font-family: Lato, sans-serif;
-font-weight: 300;
-font-size: 15px;
-margin: 0;
-}
-*,
-*:before,
-*:after {
-box-sizing: border-box;
-}
-*:focus {
-  outline: none;
-}
-a,
-a:visited,
-a:active {
-color: black;
-}
-main {
-min-height: 100vh;
-display: flex;
-align-items: center;
-flex-direction: column;
-}
-.title {
-color: #fff;
-text-align: center;
-font-weight: 300;
-font-size: 34px;
-margin-top: 20px;
-}
-.window {
-width: var(--window-width);
-border-radius: 6px;
-box-shadow: 0 8px 12px rgba(0, 0, 0, 0.1);
-overflow: hidden;
-margin-bottom: 20px;
-}
-.window .window-header {
-height: 25px;
-background: Gainsboro;
-position: relative;
-}
-.window .window-header .action-buttons {
-position: absolute;
-top: 50%;
-left: 10px;
-margin-top: -5px;
-width: 10px;
-height: 10px;
-background: Crimson;
-border-radius: 50%;
-box-shadow: 15px 0 0 Orange, 30px 0 0 LimeGreen;
-}
-#code-editor {
-border-bottom-left-radius: 6px;
-border-bottom-right-radius: 6px;
-box-shadow: 0 2px 2px 0 rgba(0, 0, 0, 0.14), 0 1px 5px 0 rgba(0, 0, 0, 0.12),
-  0 3px 1px -2px rgba(0, 0, 0, 0.2);
-font-family: "PT Mono", monospace;
-font-size: 14px;
-font-weight: 400;
-min-height: 300px;
-letter-spacing: normal;
-line-height: 20px;
-padding: 10px;
-resize: none !important;
-tab-size: 4;
-}
-#run-button {
-  padding-left:  10px;
-  padding-right: 10px;
-  font-weight: bold;
-  cursor: pointer;
-}
-#code-editor.hljs {
-padding: 10px;
-}
-#output-wrapper {
-font-family: "PT Mono", monospace;
-width: var(--window-width);
-min-height: 50px;
-background-color: #282a36;
-border-radius: 6px;
-padding: 10px;
-color: white;
-margin:0 !important;
-}
-#code-output span.error-line {
-color: #ec5424;
-}
-.controls {
-font-size: 14px;
-position: absolute;
-top: 50%;
-right: 10px;
-margin-top: -10px;
-display: flex;
-}
-.controls > div:first-child > a {
-display: inline-block;
-width: 40px;
-}
-.features {
-width: 547px;
-font-size: 16px;
-margin-bottom: 30px;
-} 
-</style>
+    .hljs,
+    .hljs-subst {
+      color: #f8f8f2
+    }
+
+    .hljs-string,
+    .hljs-title,
+    .hljs-name,
+    .hljs-type,
+    .hljs-attribute,
+    .hljs-symbol,
+    .hljs-bullet,
+    .hljs-addition,
+    .hljs-variable,
+    .hljs-template-tag,
+    .hljs-template-variable {
+      color: #f1fa8c
+    }
+
+    .hljs-comment,
+    .hljs-quote,
+    .hljs-deletion,
+    .hljs-meta {
+      color: #6272a4
+    }
+
+    .hljs-keyword,
+    .hljs-selector-tag,
+    .hljs-literal,
+    .hljs-title,
+    .hljs-section,
+    .hljs-doctag,
+    .hljs-type,
+    .hljs-name,
+    .hljs-strong {
+      font-weight: bold
+    }
+
+    .hljs-emphasis {
+      font-style: italic
+    }
+
+    :root {
+      --window-width: 80%;
+    }
+
+    body {
+      background-color: #778abb;
+      font-family: Lato, sans-serif;
+      font-weight: 300;
+      font-size: 15px;
+      margin: 0;
+    }
+
+    *,
+    *:before,
+    *:after {
+      box-sizing: border-box;
+    }
+
+    *:focus {
+      outline: none;
+    }
+
+    a,
+    a:visited,
+    a:active {
+      color: black;
+    }
+
+    main {
+      min-height: 100vh;
+      display: flex;
+      align-items: center;
+      flex-direction: column;
+    }
+
+    .title {
+      color: #fff;
+      text-align: center;
+      font-weight: 300;
+      font-size: 34px;
+      margin-top: 20px;
+    }
+
+    .window {
+      width: var(--window-width);
+      border-radius: 6px;
+      box-shadow: 0 8px 12px rgba(0, 0, 0, 0.1);
+      overflow: hidden;
+      margin-bottom: 20px;
+    }
+
+    .window .window-header {
+      height: 25px;
+      background: Gainsboro;
+      position: relative;
+    }
+
+    .window .window-header .action-buttons {
+      position: absolute;
+      top: 50%;
+      left: 10px;
+      margin-top: -5px;
+      width: 10px;
+      height: 10px;
+      background: Crimson;
+      border-radius: 50%;
+      box-shadow: 15px 0 0 Orange, 30px 0 0 LimeGreen;
+    }
+
+    #code-editor {
+      border-bottom-left-radius: 6px;
+      border-bottom-right-radius: 6px;
+      box-shadow: 0 2px 2px 0 rgba(0, 0, 0, 0.14), 0 1px 5px 0 rgba(0, 0, 0, 0.12),
+        0 3px 1px -2px rgba(0, 0, 0, 0.2);
+      font-family: "PT Mono", monospace;
+      font-size: 14px;
+      font-weight: 400;
+      min-height: 300px;
+      letter-spacing: normal;
+      line-height: 20px;
+      padding: 10px;
+      resize: none !important;
+      tab-size: 4;
+    }
+
+    #run-button {
+      padding-left: 10px;
+      padding-right: 10px;
+      font-weight: bold;
+      cursor: pointer;
+    }
+
+    #code-editor.hljs {
+      padding: 10px;
+    }
+
+    #output-wrapper {
+      font-family: "PT Mono", monospace;
+      width: var(--window-width);
+      min-height: 50px;
+      background-color: #282a36;
+      border-radius: 6px;
+      padding: 10px;
+      color: white;
+      margin: 0 !important;
+    }
+
+    #code-output span.error-line {
+      color: #ec5424;
+    }
+
+    .controls {
+      font-size: 14px;
+      position: absolute;
+      top: 50%;
+      right: 10px;
+      margin-top: -10px;
+      display: flex;
+    }
+
+    .controls>div:first-child>a {
+      display: inline-block;
+      width: 40px;
+    }
+
+    .features {
+      width: 547px;
+      font-size: 16px;
+      margin-bottom: 30px;
+    }
+  </style>
 
   <title>Try Online</title>
 </head>
+
 <body id="tryonline-body">
 
   <main>
@@ -183,74 +248,62 @@ margin-bottom: 30px;
         </div>
       </div>
       <div class="window-body">
-        <div id="code-editor" class="language-python" data-gramm="false"># A recursive fibonacci function.
-def fib(n):
-  if n &lt; 2:
-    return n
-  return fib(n-1) + fib(n-2)
-
-# Prints all fibonacci from 0 to 10 exclusive.
-for i in range(10):
-  print(f"fib({i}) = {fib(i)}")
-
-</div>
+        <div id="code-editor" class="language-python" data-gramm="false"></div>
       </div>
     </div>
     <pre id="output-wrapper"><div id="code-output">...</div></pre>
     <br>
   </main>
 
+  <script>
+    var Module = {
+      onRuntimeInitialized: function () {
+        Module.ccall('py_initialize', null, [], []);
+      },
+      print: function (text) {
+        console.log(text);
+        code_output.innerText += text + '\n';
+      },
+      onabort: function (what) {
+        code_output.innerText += 'Aborted: ' + what + '\n';
+        Module.ccall('py_finalize', null, [], []);
+      }
+    };
+  </script>
+  <script src="lib/pocketpy.js"></script>
+  <script>
+    let code_editor = document.querySelector('#code-editor');
+    let code_output = document.querySelector('#code-output');
+    let run_button = document.querySelector('#run-button');
 
-<script>
+    let highlight = withLineNumbers(function (editor) {
+      editor.textContent = editor.textContent;
+      hljs.highlightElement(editor);
+    });
 
-let code_editor = document.querySelector('#code-editor');
-let code_output = document.querySelector('#code-output');
-let run_button  = document.querySelector('#run-button');
+    highlight(code_editor);
 
-let highlight = withLineNumbers(function(editor) {
-  editor.textContent = editor.textContent;
-  hljs.highlightElement(editor);
-});
+    CodeJar(code_editor, highlight); //, { indentOn: /[(\[{:]$/});
 
-highlight(code_editor);
+    code_editor.textContent = '# A recursive fibonacci function.\ndef fib(n):\n  if n < 2:\n    return n\n  return fib(n-1) + fib(n-2)\n\n# Prints all fibonacci from 0 to 10 exclusive.\nfor i in range(10):\n  print(f"fib({i}) = {fib(i)}")\n';
 
-CodeJar(code_editor, highlight); //, { indentOn: /[(\[{:]$/});
-
-
-var Module = {
-  onRuntimeInitialized: function() {
-    Module.ccall('py_initialize', null, [], []);
-  },
-  print: function(text) {
-    console.log(text);
-    code_output.innerText += text + '\n';
-  },
-  onabort: function(what) {
-    code_output.innerText += 'Aborted: ' + what + '\n';
-    Module.ccall('py_finalize', null, [], []);
-  }
-};
-
-window.onload = function() {
-  var script = document.createElement('script');
-  script.src = 'lib/pocketpy.js';
-  document.head.appendChild(script);
-
-  run_button.onclick = function() {
-    code_output.innerText = '';
-    const source = code_editor.textContent;
-    var ok = Module.ccall(
-      'py_exec', 'boolean', ['string', 'string', 'number', 'number'],
-      [source, 'main.py', 0, 0]
-    );
-    if (!ok) {
-      Module.ccall('py_printexc', null, [], []);
-      Module.ccall('py_clearexc', null, ['number'], [0]);
+    window.onload = function () {
+      run_button.onclick = function () {
+        code_output.innerText = '';
+        const source = code_editor.textContent;
+        var ok = Module.ccall(
+          'py_exec', 'boolean', ['string', 'string', 'number', 'number'],
+          [source, 'main.py', 0, 0]
+        );
+        if (!ok) {
+          Module.ccall('py_printexc', null, [], []);
+          Module.ccall('py_clearexc', null, ['number'], [0]);
+        }
+      }
     }
-  }
-}
 
-</script>
+  </script>
 
 </body>
-</html>
+
+</html>
\ No newline at end of file
