diff --git a/about/index.html b/about/index.html
index 8faf3c2..ff21cd7 100644
--- a/about/index.html
+++ b/about/index.html
@@ -125,5 +125,6 @@
     </div>
   </div>
   <script async type="text/javascript" src="/static/main.js"></script>
+	<script async src="https://www.w3counter.com/tracker.js?id=127316"></script>
 </body>
 </html>
diff --git a/aisl/handbook.html b/aisl/handbook.html
index fdcee2b..684cd24 100644
--- a/aisl/handbook.html
+++ b/aisl/handbook.html
@@ -1533,5 +1533,6 @@ aisl_http_response_to_string(<a href="#AislHttpResponse">AislHttpResponse</a> co
 		</div>
 	</div>
 	<script async type="text/javascript" src="/static/main.js"></script>
+	<script async src="https://www.w3counter.com/tracker.js?id=127316"></script>
 </body>
 </html>
diff --git a/aisl/index.html b/aisl/index.html
index 945442c..9e70a8b 100644
--- a/aisl/index.html
+++ b/aisl/index.html
@@ -123,5 +123,6 @@
     </div>
   </div>
   <script async type="text/javascript" src="/static/main.js"></script>
+	<script async src="https://www.w3counter.com/tracker.js?id=127316"></script>
 </body>
 </html>
diff --git a/blog/index.html b/blog/index.html
index 93a819f..0efe1b2 100644
--- a/blog/index.html
+++ b/blog/index.html
@@ -83,5 +83,6 @@
     </div>
   </div>
   <script async type="text/javascript" src="/static/main.js"></script>
+	<script async src="https://www.w3counter.com/tracker.js?id=127316"></script>
 </body>
 </html>
diff --git a/contact/index.html b/contact/index.html
index 9baccfc..6306c83 100644
--- a/contact/index.html
+++ b/contact/index.html
@@ -135,5 +135,6 @@
     </div>
   </div>
   <script async type="text/javascript" src="/static/main.js"></script>
+	<script async src="https://www.w3counter.com/tracker.js?id=127316"></script>
 </body>
 </html>
diff --git a/dotrix/index.html b/dotrix/index.html
index 743461e..bf368d8 100644
--- a/dotrix/index.html
+++ b/dotrix/index.html
@@ -109,5 +109,6 @@ contributions. Or <a href="/contact/">contact us</a>, if you have ideas of colla
 		</div>
 	</div>
 	<script async type="text/javascript" src="/static/main.js"></script>
+	<script async src="https://www.w3counter.com/tracker.js?id=127316"></script>
 </body>
 </html>
diff --git a/index.html b/index.html
index 077a3ae..71f0de3 100644
--- a/index.html
+++ b/index.html
@@ -145,5 +145,6 @@
     </div>
   </div>
   <script async type="text/javascript" src="/static/main.js"></script>
+	<script async src="https://www.w3counter.com/tracker.js?id=127316"></script>
 </body>
 </html>
diff --git a/privacy-statement.html b/privacy-statement.html
index f8f34b9..f286c2f 100644
--- a/privacy-statement.html
+++ b/privacy-statement.html
@@ -181,5 +181,6 @@
     </div>
   </div>
   <script async type="text/javascript" src="/static/main.js"></script>
+	<script async src="https://www.w3counter.com/tracker.js?id=127316"></script>
 </body>
 </html>
diff --git a/static/style.css b/static/style.css
index 0da3035..e60daac 100644
--- a/static/style.css
+++ b/static/style.css
@@ -480,6 +480,11 @@ hr {
 		list-style-type: square;
 	}
 
+
+.tool-content {
+	background-color: #efefef;
+}
+
 /* -------------------------------------------------------------------------- */
 
 .main-content {
diff --git a/terms-of-use.html b/terms-of-use.html
index 2250cdb..366dbc2 100644
--- a/terms-of-use.html
+++ b/terms-of-use.html
@@ -116,5 +116,6 @@
     </div>
   </div>
   <script async type="text/javascript" src="/static/main.js"></script>
+	<script async src="https://www.w3counter.com/tracker.js?id=127316"></script>
 </body>
 </html>