diff --git a/Gemfile.lock b/Gemfile.lock
index 55b0596b8..33f668d22 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -56,4 +56,4 @@ DEPENDENCIES
   ruby_dep (~> 1.3)
 
 BUNDLED WITH
-   1.17.2
+   1.17.2
\ No newline at end of file
diff --git a/docs/_layouts/default.html b/docs/_layouts/default.html
index 20c6d877a..96cc474a5 100644
--- a/docs/_layouts/default.html
+++ b/docs/_layouts/default.html
@@ -4,6 +4,7 @@
   <meta charset="utf-8" />
   <title>NSubstitute: {{ page.title }}</title>
   <link rel="stylesheet" href="/css/style.css" type="text/css" />
+  <script src="{{ base.url | prepend: site.url }}/js/scripts.js"></script>
 </head>
 <body>
   <div id="header">
diff --git a/docs/css/style.css b/docs/css/style.css
index 0051e0aed..4a4b8d393 100644
--- a/docs/css/style.css
+++ b/docs/css/style.css
@@ -1,25 +1,25 @@
 ﻿html { font-family: "helvetica", Helvetica, Arial }
 body {
-    margin:0;
-    padding:0;
-    border:0;
-    width:100%;
-    min-width:600px;
+    margin: 0;
+    padding: 0;
+    border: 0;
+    width: 100%;
+    min-width: 600px;
 }
 
-p{
-  font-size:1.0em;
-  line-height:1.6;
+p {
+  font-size: 1.0em;
+  line-height: 1.6;
 }
 
 ul {
-  font-size:1.0em;
-  line-height:1.6;
+  font-size: 1.0em;
+  line-height: 1.6;
 }
 
-h1{font-size:2.5em}
-h2{font-size:2.0em}
-h3{font-size:1.5em}
+h1{font-size: 2.5em}
+h2{font-size: 2.0em}
+h3{font-size: 1.5em}
 
 a:link { color: #365f91; text-decoration: none;}
 a:visited { color: #365f91; text-decoration: none;}
@@ -80,7 +80,7 @@ a:active { color: #000000; text-decoration: underline;}
 #post-content {
     float: left;
     position: relative;
-    width:71%;
+    width: 71%;
     padding-left: 10px;
 }
 
@@ -181,6 +181,42 @@ code {
     min-height: inherit !important;
 }
 
+h1 {
+    margin-top: 0.5em;
+    margin-bottom: 0.2em;
+}
+
+h2 {
+    position: relative;
+    display: inline-block;
+    margin-top: 0.5em;
+    margin-bottom: 0.2em;
+}
+
+h3 {
+    position: relative;
+    display: inline-block;
+    margin-top: 0.5em;
+    margin-bottom: 0.2em;
+}
+  
+.tooltip {
+    visibility: visible;
+    color: #365f91;
+    background-color: #ECF0F5;
+    position: absolute;
+    z-index: 1;
+    white-space: nowrap;
+    font-size: 0.4em;
+    padding: 0.6em;
+    margin: 0.4em auto auto 0.6em;
+    border-radius: 30px;
+}
+
+.tooltip-hidden {
+    visibility: hidden;
+}
+
 /* Pygments vs style, as generated by:
  *  https://github.com/richleland/pygments-css/blob/master/vs.css
  */
@@ -222,4 +258,4 @@ code {
 .highlight .sr { color: #a31515 } /* Literal.String.Regex */
 .highlight .s1 { color: #a31515 } /* Literal.String.Single */
 .highlight .ss { color: #a31515 } /* Literal.String.Symbol */
-/* End pygments vs style */
+/* End pygments vs style */
\ No newline at end of file
diff --git a/docs/help/_posts/2010-01-01-getting-started.markdown b/docs/help/_posts/2010-01-01-getting-started.markdown
index 0211e618b..27db8bf91 100644
--- a/docs/help/_posts/2010-01-01-getting-started.markdown
+++ b/docs/help/_posts/2010-01-01-getting-started.markdown
@@ -119,4 +119,4 @@ calculator.PoweringUp += Raise.Event();
 Assert.That(eventWasRaised);
 ```
 
-That's pretty much all you need to get started with NSubstitute. Read on for more detailed feature descriptions, as well as for some of the less common requirements that NSubstitute supports.
+That's pretty much all you need to get started with NSubstitute. Read on for more detailed feature descriptions, as well as for some of the less common requirements that NSubstitute supports.
\ No newline at end of file
diff --git a/docs/help/_posts/2010-01-02-creating-a-substitute.markdown b/docs/help/_posts/2010-01-02-creating-a-substitute.markdown
index cf0573685..cb37956d3 100644
--- a/docs/help/_posts/2010-01-02-creating-a-substitute.markdown
+++ b/docs/help/_posts/2010-01-02-creating-a-substitute.markdown
@@ -98,7 +98,4 @@ Assert.AreEqual("hello", func());
 
 ## Partial substitutes and test spies
 
-When required we can also create substitutes that run real code by default, letting us replace [specific parts of a class with substitute behaviour](/help/partial-subs/).
-
-
-
+When required we can also create substitutes that run real code by default, letting us replace [specific parts of a class with substitute behaviour](/help/partial-subs/).
\ No newline at end of file
diff --git a/docs/help/_posts/2010-02-01-set-return-value.markdown b/docs/help/_posts/2010-02-01-set-return-value.markdown
index 88df0ab9c..602b53cb7 100644
--- a/docs/help/_posts/2010-02-01-set-return-value.markdown
+++ b/docs/help/_posts/2010-02-01-set-return-value.markdown
@@ -52,5 +52,4 @@ Assert.AreEqual(calculator.Mode, "HEX");
 
 
 ## More ways of setting return values
-This covers the very basics of setting a return value, but NSubstitute can do much more. Read on for other approachs, including [matching specific arguments](/help/return-for-args), [ignoring arguments](/help/return-for-any-args), using [functions to calculate return values](/help/return-from-function) and returning [multiple results](/help/multiple-returns).
-
+This covers the very basics of setting a return value, but NSubstitute can do much more. Read on for other approachs, including [matching specific arguments](/help/return-for-args), [ignoring arguments](/help/return-for-any-args), using [functions to calculate return values](/help/return-from-function) and returning [multiple results](/help/multiple-returns).
\ No newline at end of file
diff --git a/docs/help/_posts/2010-02-02-return-for-args.markdown b/docs/help/_posts/2010-02-02-return-for-args.markdown
index a97bbff7e..852dc7631 100644
--- a/docs/help/_posts/2010-02-02-return-for-args.markdown
+++ b/docs/help/_posts/2010-02-02-return-for-args.markdown
@@ -31,5 +31,4 @@ Assert.AreNotEqual(345, calculator.Add(1, 2));
 //Return when both args equal to 0:
 calculator.Add(Arg.Is(0), Arg.Is(0)).Returns(99);
 Assert.AreEqual(99, calculator.Add(0, 0));
-```
-
+```
\ No newline at end of file
diff --git a/docs/help/_posts/2010-02-03-return-for-any-args.markdown b/docs/help/_posts/2010-02-03-return-for-any-args.markdown
index daca0f8b7..e542a020c 100644
--- a/docs/help/_posts/2010-02-03-return-for-any-args.markdown
+++ b/docs/help/_posts/2010-02-03-return-for-any-args.markdown
@@ -30,4 +30,4 @@ calculator.Add(default, default).ReturnsForAnyArgs(100);
 
 The same behaviour can also be achieved using [argument matchers](/help/argument-matchers): it is simply a shortcut for replacing each argument with `Arg.Any<T>()`.
 
-`ReturnsForAnyArgs()` has the same overloads as `Returns()`, so you can also specify multiple return values or calculated return values using this approach.
+`ReturnsForAnyArgs()` has the same overloads as `Returns()`, so you can also specify multiple return values or calculated return values using this approach.
\ No newline at end of file
diff --git a/docs/help/_posts/2010-02-03-return-from-function.markdown b/docs/help/_posts/2010-02-03-return-from-function.markdown
index 9a059d870..5ef8c7502 100644
--- a/docs/help/_posts/2010-02-03-return-from-function.markdown
+++ b/docs/help/_posts/2010-02-03-return-from-function.markdown
@@ -79,4 +79,4 @@ calculator
 calculator.Add(7,3);
 calculator.Add(2,2);
 Assert.AreEqual(counter, 2);
-```
+```
\ No newline at end of file
diff --git a/docs/help/_posts/2010-02-04-multiple-returns.markdown b/docs/help/_posts/2010-02-04-multiple-returns.markdown
index 2f52bfef5..6aa545df1 100644
--- a/docs/help/_posts/2010-02-04-multiple-returns.markdown
+++ b/docs/help/_posts/2010-02-04-multiple-returns.markdown
@@ -38,5 +38,4 @@ Assert.Throws<Exception>(() => { var result = calculator.Mode; });
 
 ## Configuring other calls without using up multiple returns
 
-If a call has been configured with multiple returns values, you can configure a more specific call without using up any of these callbacks using [`.Configure()`](/help/configure/).
-
+If a call has been configured with multiple returns values, you can configure a more specific call without using up any of these callbacks using [`.Configure()`](/help/configure/).
\ No newline at end of file
diff --git a/docs/help/_posts/2010-02-10-replacing-return-values.markdown b/docs/help/_posts/2010-02-10-replacing-return-values.markdown
index 832f50001..3420f72aa 100644
--- a/docs/help/_posts/2010-02-10-replacing-return-values.markdown
+++ b/docs/help/_posts/2010-02-10-replacing-return-values.markdown
@@ -23,5 +23,4 @@ public void SetUp() {
     calculator = Substitute.For<ICalculator>();
 }
 ```
--->
-
+-->
\ No newline at end of file
diff --git a/docs/help/_posts/2010-03-01-received-calls.markdown b/docs/help/_posts/2010-03-01-received-calls.markdown
index 8c02d1d10..813204538 100644
--- a/docs/help/_posts/2010-03-01-received-calls.markdown
+++ b/docs/help/_posts/2010-03-01-received-calls.markdown
@@ -237,5 +237,4 @@ public void ShouldRaiseLowFuel(){
 	    .Received()
 	    .Invoke(fuelManagement, Arg.Is<LowFuelWarningEventArgs>(x => x.PercentLeft < 20));
 }
-``` 
-
+``` 
\ No newline at end of file
diff --git a/docs/help/_posts/2010-03-10-clear-received-calls.markdown b/docs/help/_posts/2010-03-10-clear-received-calls.markdown
index 3ce3295ab..8a0732ddf 100644
--- a/docs/help/_posts/2010-03-10-clear-received-calls.markdown
+++ b/docs/help/_posts/2010-03-10-clear-received-calls.markdown
@@ -43,6 +43,4 @@ runner.Run();
 command.DidNotReceive().Execute();
 ```
 
-`ClearReceivedCalls()` will not clear any results set up for the substitute using `Returns()`. If we need to this, we can [replace previously specified results](/help/replacing-return-values) by calling `Returns()` again.
-
-
+`ClearReceivedCalls()` will not clear any results set up for the substitute using `Returns()`. If we need to this, we can [replace previously specified results](/help/replacing-return-values) by calling `Returns()` again.
\ No newline at end of file
diff --git a/docs/help/_posts/2010-04-01-argument-matchers.markdown b/docs/help/_posts/2010-04-01-argument-matchers.markdown
index 435b49238..3d3266d2f 100644
--- a/docs/help/_posts/2010-04-01-argument-matchers.markdown
+++ b/docs/help/_posts/2010-04-01-argument-matchers.markdown
@@ -293,4 +293,4 @@ public void ManualArgSnapshot() {
 }
 ```
 
- We can then use our standard assertion library for checking the value. This approach can also be helpful for asserting on complex objects, as our assertions can be more detailed and provide more useful information than NSubstitute typically provides in these cases.
+ We can then use our standard assertion library for checking the value. This approach can also be helpful for asserting on complex objects, as our assertions can be more detailed and provide more useful information than NSubstitute typically provides in these cases.
\ No newline at end of file
diff --git a/docs/help/_posts/2010-05-01-callbacks.markdown b/docs/help/_posts/2010-05-01-callbacks.markdown
index 04010d494..cd57c2b2c 100644
--- a/docs/help/_posts/2010-05-01-callbacks.markdown
+++ b/docs/help/_posts/2010-05-01-callbacks.markdown
@@ -111,5 +111,4 @@ for (int i = 0; i < 5; i++)
 }
 Assert.That(String.Concat(calls), Is.EqualTo("123++"));
 Assert.That(counter, Is.EqualTo(5));
-```
-
+```
\ No newline at end of file
diff --git a/docs/help/_posts/2010-05-02-throwing-exceptions.markdown b/docs/help/_posts/2010-05-02-throwing-exceptions.markdown
index 49cd515d8..ade4d02b3 100644
--- a/docs/help/_posts/2010-05-02-throwing-exceptions.markdown
+++ b/docs/help/_posts/2010-05-02-throwing-exceptions.markdown
@@ -25,5 +25,4 @@ calculator
 //Both calls will now throw.
 Assert.Throws<Exception>(() => calculator.Add(-1, -1));
 Assert.Throws<Exception>(() => calculator.Add(-2, -2));
-```
-
+```
\ No newline at end of file
diff --git a/docs/help/_posts/2010-05-10-configure.markdown b/docs/help/_posts/2010-05-10-configure.markdown
index ba85b7245..50905f4df 100644
--- a/docs/help/_posts/2010-05-10-configure.markdown
+++ b/docs/help/_posts/2010-05-10-configure.markdown
@@ -32,4 +32,4 @@ Assert.Throws<Exception>(() => calculator.Add(-2, -2));
 
 NSubstitute will also assume we are configuring a call if we have an argument matcher in our call, such as `Arg.Is(1)` in `calculator.Add(Arg.Is(1), 2).Returns(3)`, but it is generally better to be more explicit by using `.Configure()`.
 
-This can be particularly useful with [partial substitutes](/help/partial-subs/) to help avoid real code being executed when configuring calls that would otherwise call the base implementation.
+This can be particularly useful with [partial substitutes](/help/partial-subs/) to help avoid real code being executed when configuring calls that would otherwise call the base implementation.
\ No newline at end of file
diff --git a/docs/help/_posts/2010-06-01-raising-events.markdown b/docs/help/_posts/2010-06-01-raising-events.markdown
index 629a6055b..908eae640 100644
--- a/docs/help/_posts/2010-06-01-raising-events.markdown
+++ b/docs/help/_posts/2010-06-01-raising-events.markdown
@@ -95,4 +95,4 @@ engine.RevvedAt += rpm => revvedAt = rpm;
 engine.RevvedAt += Raise.Event<Action<int>>(123);
 
 Assert.AreEqual(123, revvedAt);
-```
+```
\ No newline at end of file
diff --git a/docs/help/_posts/2010-10-01-auto-and-recursive-mocks.markdown b/docs/help/_posts/2010-10-01-auto-and-recursive-mocks.markdown
index 1dd26ff0c..1995f8475 100644
--- a/docs/help/_posts/2010-10-01-auto-and-recursive-mocks.markdown
+++ b/docs/help/_posts/2010-10-01-auto-and-recursive-mocks.markdown
@@ -103,9 +103,4 @@ Properties and methods returning types of `String` or `Array` will automatically
 var identity = Substitute.For<IIdentity>();
 Assert.AreEqual(String.Empty, identity.Name);
 Assert.AreEqual(0, identity.Roles().Length);
-```
-
-
-
-
-
+```
\ No newline at end of file
diff --git a/docs/help/_posts/2010-11-01-setting-out-and-ref-arguments.markdown b/docs/help/_posts/2010-11-01-setting-out-and-ref-arguments.markdown
index e4c383ded..82296472f 100644
--- a/docs/help/_posts/2010-11-01-setting-out-and-ref-arguments.markdown
+++ b/docs/help/_posts/2010-11-01-setting-out-and-ref-arguments.markdown
@@ -56,5 +56,4 @@ Assert.AreEqual(1, counter);
 lookup.TryLookup("hello", out value);
 // Call does NOT match anymore, counter is still 1:
 Assert.AreEqual(1, counter);
-```
-
+```
\ No newline at end of file
diff --git a/docs/help/_posts/2010-12-01-actions-with-arguments.markdown b/docs/help/_posts/2010-12-01-actions-with-arguments.markdown
index 60c6b895f..3d9afec9e 100644
--- a/docs/help/_posts/2010-12-01-actions-with-arguments.markdown
+++ b/docs/help/_posts/2010-12-01-actions-with-arguments.markdown
@@ -127,5 +127,4 @@ var results = new[] {
 
 Assert.AreEqual(3, numberOfCallsWhereFirstArgIsLessThan0); //3 of 4 calls have first arg < 0
 Assert.AreEqual(results, new[] {123, 123, 123, 0}); //Last call returns 0, not 123
-```
-
+```
\ No newline at end of file
diff --git a/docs/help/_posts/2013-01-01-received-in-order.markdown b/docs/help/_posts/2013-01-01-received-in-order.markdown
index e049b3566..a2685a0ca 100644
--- a/docs/help/_posts/2013-01-01-received-in-order.markdown
+++ b/docs/help/_posts/2013-01-01-received-in-order.markdown
@@ -65,5 +65,4 @@ public interface ICommand {
   void Run(IConnection c);
 }
 ```
--->
-
+-->
\ No newline at end of file
diff --git a/docs/help/_posts/2013-02-01-partial-subs.markdown b/docs/help/_posts/2013-02-01-partial-subs.markdown
index 0dedf29e1..bfb887c97 100644
--- a/docs/help/_posts/2013-02-01-partial-subs.markdown
+++ b/docs/help/_posts/2013-02-01-partial-subs.markdown
@@ -77,6 +77,4 @@ public void ShouldSendMultipleEmails() {
 
 ## Test spies
 
-Even without substituting for specific parts of a class, the instance returned by `Substitute.ForPartsOf<T>` records all calls made to virtual members, so we can [check `Received()` calls](/help/received-calls/) made to any partial substitute.
-
-
+Even without substituting for specific parts of a class, the instance returned by `Substitute.ForPartsOf<T>` records all calls made to virtual members, so we can [check `Received()` calls](/help/received-calls/) made to any partial substitute.
\ No newline at end of file
diff --git a/docs/help/_posts/2013-03-01-return-for-all.markdown b/docs/help/_posts/2013-03-01-return-for-all.markdown
index e9c10c637..46a3f0d1e 100644
--- a/docs/help/_posts/2013-03-01-return-for-all.markdown
+++ b/docs/help/_posts/2013-03-01-return-for-all.markdown
@@ -84,4 +84,4 @@ public void ReturnsTakesPrecedence() {
   Assert.That(sub.GetWidget(1), Is.SameAs(widget));
   Assert.That(sub.GetWidget(42), Is.SameAs(otherWidget));
 }
-```
+```
\ No newline at end of file
diff --git a/docs/help/_posts/2013-04-01-threading.markdown b/docs/help/_posts/2013-04-01-threading.markdown
index a35a25c5f..7963e2f58 100644
--- a/docs/help/_posts/2013-04-01-threading.markdown
+++ b/docs/help/_posts/2013-04-01-threading.markdown
@@ -7,5 +7,4 @@ It is fairly standard for production code to call a substitute from multiple thr
 
 Although this particular issue has been mitigated by work in [#452](https://github.com/nsubstitute/NSubstitute/pull/462), issue [#256](https://github.com/nsubstitute/NSubstitute/issues/256) shows the types of problems that can occur if we're not careful with threading.
 
-To avoid this sort of problem, make sure your test has finished configuring its substitutes before exercising the production code, then make sure the production code has completed before your test asserts on `Received()` calls.
-
+To avoid this sort of problem, make sure your test has finished configuring its substitutes before exercising the production code, then make sure the production code has completed before your test asserts on `Received()` calls.
\ No newline at end of file
diff --git a/docs/help/_posts/2013-04-15-compat-args.markdown b/docs/help/_posts/2013-04-15-compat-args.markdown
index 27fd07da0..7de29f8cd 100644
--- a/docs/help/_posts/2013-04-15-compat-args.markdown
+++ b/docs/help/_posts/2013-04-15-compat-args.markdown
@@ -115,6 +115,4 @@ public void Sample() {
     // Or re-write without expression tree if possible:
     sub.Received().DoStuff(Arg.Any<int>());
 }
-```
-
-
+```
\ No newline at end of file
diff --git a/docs/help/_posts/2013-05-01-nsubstitute-analysers.markdown b/docs/help/_posts/2013-05-01-nsubstitute-analysers.markdown
index 082362cb4..8c5e763a9 100644
--- a/docs/help/_posts/2013-05-01-nsubstitute-analysers.markdown
+++ b/docs/help/_posts/2013-05-01-nsubstitute-analysers.markdown
@@ -18,4 +18,4 @@ See [NSubstitute.Analyzers documentation](https://github.com/nsubstitute/NSubsti
 
 ## Spelling
 
-The Australian members of our team would like to point out they would have preferred to use the English spelling `NSubstitute.Analysers` for this project, but have begrudgingly agreed to use the American (mis)spelling instead. :)
+The Australian members of our team would like to point out they would have preferred to use the English spelling `NSubstitute.Analysers` for this project, but have begrudgingly agreed to use the American (mis)spelling instead. :)
\ No newline at end of file
diff --git a/docs/help/_posts/2015-01-01-how-nsub-works.markdown b/docs/help/_posts/2015-01-01-how-nsub-works.markdown
index 510572e2f..4c6033479 100644
--- a/docs/help/_posts/2015-01-01-how-nsub-works.markdown
+++ b/docs/help/_posts/2015-01-01-how-nsub-works.markdown
@@ -86,6 +86,4 @@ The final thing to notice here is that there is the potential for real logic fro
 * Be careful substituting for classes!
 * Where possible use interfaces instead.
 * Remember NSubstitute works by inheriting from (or implementing) your original type. If you can't override a member by manually writing a sub-class, then NSubstitute won't be able to either!
-* Install [NSubstitute.Analyzers](/help/nsubstitute-analysers) where ever you install NSubstitute. This will help you avoid these (and other) pitfalls.
-
-
+* Install [NSubstitute.Analyzers](/help/nsubstitute-analysers) where ever you install NSubstitute. This will help you avoid these (and other) pitfalls.
\ No newline at end of file
diff --git a/docs/index.md b/docs/index.md
index b25c96f89..811cc7685 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -5,7 +5,8 @@ title: A friendly substitute for .NET mocking libraries
 
 <div id="features">
 <div class="feature" markdown="1">
-<h2>Simple, succinct, pleasant to use</h2>
+
+## Simple, succinct, pleasant to use
 
 ```csharp
 //Create:
@@ -35,8 +36,10 @@ calculator.PoweringUp += Raise.Event();
 -->
 </div>
 
-<div class="feature">
-<h2>Helpful exceptions</h2>
+<div class="feature" markdown="1">
+
+## Helpful exceptions
+
 <div class="highlight">
 <pre>
 ReceivedCallsException : Expected to receive a call matching:
@@ -48,8 +51,10 @@ Received 2 non-matching calls (non-matching arguments indicated with '*' charact
 </div>
 </div>
 
-<div class="feature">
-<h2>Don't sweat the small stuff</h2>
+<div class="feature" markdown="1">
+
+## Don't sweat the small stuff
+
 <p>Mock, stub, fake, spy, test double? Strict or loose? Nah, just substitute for the type you need!</p>
 <p>NSubstitute is designed for Arrange-Act-Assert (AAA) testing, so you just need to arrange how it should work, then assert it received the calls you expected once you're done. Because you've got more important code to write than whether you need a mock or a stub.</p>
 </div>
@@ -74,8 +79,9 @@ Received 2 non-matching calls (non-matching arguments indicated with '*' charact
 </div>
 
 <div class="sidebar">
-<div id="why-use-it">
-<h3>Another library?</h3>
+<div id="why-use-it" markdown="1">
+
+### Another library?
 
 <p>There are already some great mocking libraries around for .NET, so why create another? We found that for all their great features, none of the existing libraries had the succinct syntax we were craving &mdash; the code required to configure test doubles quickly obscured the intention behind our tests.</p>
 
diff --git a/docs/js/scripts.js b/docs/js/scripts.js
new file mode 100644
index 000000000..6332ba5bc
--- /dev/null
+++ b/docs/js/scripts.js
@@ -0,0 +1,44 @@
+window.onload = () => {
+    const headers = document.querySelectorAll('h1, h2, h3, h4');
+    headers.forEach(header => {
+        const anchor = createHeadingAnchor(header);
+        const tooltip = createTooltip();
+        header.innerText = null;
+        header.appendChild(anchor);
+        header.appendChild(tooltip);
+        header.addEventListener('click', () => {
+          handleClickEvent(header, tooltip);
+        }, true);
+    });
+}
+
+const createHeadingAnchor = (header) => {
+  const anchor = document.createElement('a');
+  anchor.href = '#' + header.id;
+  anchor.innerText = header.innerText;
+  return anchor;
+}
+
+const createTooltip = () => {
+  const tooltip = document.createElement('span');
+  tooltip.classList.add('tooltip-hidden')
+  tooltip.classList.add('tooltip')
+  tooltip.innerHTML = 'copied to clipboard';
+  return tooltip;
+}
+
+const handleClickEvent = (header, tooltip) => {
+  copyUrl(header);
+  displayTooltipText(tooltip);
+}
+
+const copyUrl = (header) => {
+  navigator.clipboard.writeText(header.firstChild.href);
+}
+
+const displayTooltipText = (tooltip) => {
+  tooltip.classList.remove('tooltip-hidden');
+  setTimeout(() => {
+    tooltip.classList.add('tooltip-hidden');
+    }, 1000);
+}
\ No newline at end of file
