diff --git a/playground/index.html b/playground/index.html
index eb403b0..45bbf2b 100644
--- a/playground/index.html
+++ b/playground/index.html
@@ -4,8 +4,39 @@
     <title>@tbela99/css-parser Playground</title>
     <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet"
           integrity="sha384-QWTKZyjpPEjISv5WaRU9OFeRpok6YctnYmDr5pNlyT2bRjXh0JMhjY6hW+ALEwIH" crossorigin="anonymous">
+    <style>
+
+        .github-corner {
+            border-bottom: 0;
+            position: fixed;
+            right: 0;
+            text-decoration: none;
+            top: 0;
+            z-index: 1;
+        }
+
+        .github-corner .octo-body {
+
+            fill: #fff;
+        }
+
+        .github-corner svg {
+            color: #fff;
+            fill: #42b983;
+        }
+    </style>
 </head>
 <body>
+<a href="https://github.com/tbela99/css-parser" target="_blank" class="github-corner"
+   aria-label="View source on Github">
+    <svg width="80" height="80" viewBox="0 0 250 250" aria-hidden="true">
+        <path d="M0,0 L115,115 L130,115 L142,142 L250,250 L250,0 Z"></path>
+        <path d="M128.3,109.0 C113.8,99.7 119.0,89.6 119.0,89.6 C122.0,82.7 120.5,78.6 120.5,78.6 C119.2,72.0 123.4,76.3 123.4,76.3 C127.3,80.9 125.5,87.3 125.5,87.3 C122.9,97.6 130.6,101.9 134.4,103.2"
+              fill="currentColor" style="transform-origin: 130px 106px;" class="octo-arm"></path>
+        <path d="M115.0,115.0 C114.9,115.1 118.7,116.5 119.8,115.4 L133.7,101.6 C136.9,99.2 139.9,98.4 142.2,98.6 C133.8,88.0 127.5,74.4 143.8,58.0 C148.5,53.4 154.0,51.2 159.7,51.0 C160.3,49.4 163.2,43.6 171.4,40.1 C171.4,40.1 176.1,42.5 178.8,56.2 C183.1,58.6 187.2,61.8 190.9,65.4 C194.5,69.0 197.7,73.2 200.1,77.6 C213.8,80.2 216.3,84.9 216.3,84.9 C212.7,93.1 206.9,96.0 205.4,96.6 C205.1,102.4 203.0,107.8 198.3,112.5 C181.9,128.9 168.3,122.5 157.7,114.1 C157.9,116.9 156.7,120.9 152.7,124.9 L141.0,136.5 C139.8,137.7 141.6,141.9 141.8,141.8 Z"
+              fill="currentColor" class="octo-body"></path>
+    </svg>
+</a>
 <div class="container-fluid">
     <div class="row">
         <div class="col">
@@ -170,7 +201,7 @@ <h1>@tbela99/css-parser Playground</h1>
                 <div class="col">
                     <div class="mb-3">
                         <label for="result" class="form-label">Result</label>
-                        <a download="result" href="#">Download                        </a>
+                        <a download="result" href="#">Download </a>
                         <textarea class="form-control" id="result" name="result" rows="10" disabled></textarea>
                     </div>
                 </div>
@@ -181,14 +212,14 @@ <h1>@tbela99/css-parser Playground</h1>
                         <label for="ast" class="form-label">AST</label>
                         <a download="ast" href="#">Download</a>
 
-                            <textarea class="form-control" id="ast" name="ast" rows="10" disabled></textarea>
+                        <textarea class="form-control" id="ast" name="ast" rows="10" disabled></textarea>
                     </div>
                 </div>
                 <div class="col">
                     <div class="mb-3">
                         <label for="errors" class="form-label">Errors</label>
                         <a download="errors" href="#">Download</a>
-                            <textarea class="form-control" id="errors" name="errors" rows="10" disabled></textarea>
+                        <textarea class="form-control" id="errors" name="errors" rows="10" disabled></textarea>
                     </div>
                 </div>
             </div>
@@ -208,6 +239,22 @@ <h1>@tbela99/css-parser Playground</h1>
                     </div>
                 </div>
             </div>
+            <div class="row">
+                <div class="col">
+                    <div class="mb-3">
+                        <ul class="navbar-nav">
+                            <li class="nav-item">
+                                <a class="nav-link" href="https://github.com/tbela99/css-parser"
+                                   target="_blank">
+                                    <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor"
+                                         class="bi bi-github" viewBox="0 0 16 16">
+                                        <path d="M8 0C3.58 0 0 3.58 0 8c0 3.54 2.29 6.53 5.47 7.59.4.07.55-.17.55-.38 0-.19-.01-.82-.01-1.49-2.01.37-2.53-.49-2.69-.94-.09-.23-.48-.94-.82-1.13-.28-.15-.68-.52-.01-.53.63-.01 1.08.58 1.23.82.72 1.21 1.87.87 2.33.66.07-.52.28-.87.51-1.07-1.78-.2-3.64-.89-3.64-3.95 0-.87.31-1.59.82-2.15-.08-.2-.36-1.02.08-2.12 0 0 .67-.21 2.2.82.64-.18 1.32-.27 2-.27s1.36.09 2 .27c1.53-1.04 2.2-.82 2.2-.82.44 1.1.16 1.92.08 2.12.51.56.82 1.27.82 2.15 0 3.07-1.87 3.75-3.65 3.95.29.25.54.73.54 1.48 0 1.07-.01 1.93-.01 2.2 0 .21.15.46.55.38A8.01 8.01 0 0 0 16 8c0-4.42-3.58-8-8-8"/>
+                                    </svg>
+                                    GitHub</a></li>
+                        </ul>
+                    </div>
+                </div>
+            </div>
         </div>
     </div>
 </div>
