diff --git a/about.html b/about.html
index ff3d944..62ebcee 100644
--- a/about.html
+++ b/about.html
@@ -35,3 +35,20 @@
 <span class="w3-button w3-xxlarge w3-white w3-right" onclick="w3_open()"><i class="fa fa-bars"></i></span> 
 <div class="w3-clear"></div>
 </body>
+
+<script>
+
+// Open and close sidebar
+function w3_open() {
+  document.getElementById("mySidebar").style.width = "100%";
+  document.getElementById("mySidebar").style.display = "block";
+}
+
+function w3_close() {
+  document.getElementById("mySidebar").style.display = "none";
+}
+
+</script>
+
+</body>
+</html>