diff --git a/README.md b/README.md
index b2299a0..d738fa1 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 Tsfunct is a **T**ype**S**cript **funct**ional library made directly for TS with its static
 typesystem in mind.
 
-### Installation
+## Installation
 
 To install this package run either:
 
@@ -13,7 +13,7 @@ or if you use npm
 
 `npm i @siegrift/tsfunct --save` 
 
-### Motivation
+## Motivation
 
 There are two big libraries which provide helper functions for JS/TS. These are
 [lodash](https://github.com/lodash/lodash) and [ramda](https://github.com/ramda/ramda). Both of
@@ -46,13 +46,13 @@ There are many advantages of this helper:
 
 Refer to documentation, source code and tests for more examples.
 
-#### Chaining
+## Chaining
 
 Original idea was to support chaining same way as lodash `_.chain` works, however after reading
 [this article](https://medium.com/making-internets/why-using-chain-is-a-mistake-9bc1f80d51ba)
 describing the disadvantages of using this function, I decided to drop this idea.
 
-#### Functional programming style
+## Functional programming style
 
 All of the functions in this library are written **imperatively** (e.g. `get(object, path)` compared
 to traditional functional `get(path, object)`). I encourage you to use FP style, and you can easily
@@ -60,7 +60,7 @@ create small wrappers, which will [curry](https://lodash.com/docs/4.17.11#curry)
 [rearrange](https://lodash.com/docs/4.17.11#rearg) the arguments (however, your helper will need
 fixed number arguments).
 
-### Immutability
+## Immutability
 
 All functions in this library are **effectively immutable**. That means that if you use the helpers
 according to their idiomatic usage, library is immutable. However, you are able to modify the
@@ -73,7 +73,7 @@ const mapped = map(original, (val: any) => (val.a = 3));
 // 'original' will equal to [{ a: 3 }, { a: 3 }, { a: 3 }]
 ```
 
-### API and documentation
+## API and documentation
 
 Documentation is automatically generated from source code and can be found at github pages
 [here](https://siegrift.github.io/tsfunct/).
diff --git a/docs/index.html b/docs/index.html
index a4e64fa..0e362d7 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -67,12 +67,12 @@ <h1> @siegrift/tsfunct</h1>
 				<h1 id="tsfunct-circleci">tsfunct <a href="https://circleci.com/gh/Siegrift/tsfunct"><img src="https://circleci.com/gh/Siegrift/tsfunct.svg?style=svg" alt="CircleCI"></a></h1>
 				<p>Tsfunct is a <strong>T**ype</strong>S<strong>cript **funct</strong>ional library made directly for TS with its static
 				typesystem in mind.</p>
-				<h3 id="installation">Installation</h3>
+				<h2 id="installation">Installation</h2>
 				<p>To install this package run either:</p>
 				<p><code>yarn add @siegrift/tsfunct</code></p>
 				<p>or if you use npm</p>
 				<p><code>npm i @siegrift/tsfunct --save</code> </p>
-				<h3 id="motivation">Motivation</h3>
+				<h2 id="motivation">Motivation</h2>
 				<p>There are two big libraries which provide helper functions for JS/TS. These are
 					<a href="https://github.com/lodash/lodash">lodash</a> and <a href="https://github.com/ramda/ramda">ramda</a>. Both of
 					these libraries are made for JS and the TS typings have been added only afterwards. Also, these
@@ -97,17 +97,17 @@ <h3 id="motivation">Motivation</h3>
 					<li>Handles arrays, optional and nullable values (even in intermediate objects)</li>
 				</ul>
 				<p>Refer to documentation, source code and tests for more examples.</p>
-				<h4 id="chaining">Chaining</h4>
+				<h2 id="chaining">Chaining</h2>
 				<p>Original idea was to support chaining same way as lodash <code>_.chain</code> works, however after reading
 					<a href="https://medium.com/making-internets/why-using-chain-is-a-mistake-9bc1f80d51ba">this article</a>
 				describing the disadvantages of using this function, I decided to drop this idea.</p>
-				<h4 id="functional-programming-style">Functional programming style</h4>
+				<h2 id="functional-programming-style">Functional programming style</h2>
 				<p>All of the functions in this library are written <strong>imperatively</strong> (e.g. <code>get(object, path)</code> compared
 					to traditional functional <code>get(path, object)</code>). I encourage you to use FP style, and you can easily
 					create small wrappers, which will <a href="https://lodash.com/docs/4.17.11#curry">curry</a>, and
 					<a href="https://lodash.com/docs/4.17.11#rearg">rearrange</a> the arguments (however, your helper will need
 				fixed number arguments).</p>
-				<h3 id="immutability">Immutability</h3>
+				<h2 id="immutability">Immutability</h2>
 				<p>All functions in this library are <strong>effectively immutable</strong>. That means that if you use the helpers
 					according to their idiomatic usage, library is immutable. However, you are able to modify the
 				original entity, for example, by using <code>map</code> helper this way:</p>
@@ -115,7 +115,7 @@ <h3 id="immutability">Immutability</h3>
 <span class="hljs-keyword">const</span> mapped = map(original, (val: any) =&gt; (val.a = <span class="hljs-number">3</span>));
 <span class="hljs-comment">// 'mapped'  will equal to [3, 3, 3]</span>
 <span class="hljs-comment">// 'original' will equal to [{ a: 3 }, { a: 3 }, { a: 3 }]</span></code></pre>
-				<h3 id="api-and-documentation">API and documentation</h3>
+				<h2 id="api-and-documentation">API and documentation</h2>
 				<p>Documentation is automatically generated from source code and can be found at github pages
 				<a href="https://siegrift.github.io/tsfunct/">here</a>.</p>
 				<p><em>You can read the list and sources of all helpers in the src/lib folder <a href="https://github.com/Siegrift/tsfunct/tree/master/src/lib">here</a>.</em></p>