add a development section

content/concepts/contributing.md

@@ -0,0 +1,27 @@
+---
+title: Contributing
+---
+
+If you would like to contribute, you have different alternatives:
+
+## Report a Bug
+
+To report a bug, go to the relevant GitHub repository, click on the Issues tab, click on the New issue button, and read the instructions.
+
+## Write an Issue
+
+To write an issue, go to the relevant GitHub repository, click on the Issues tab, click on the New issue button, and read the instructions.
+
+## Make a Feature Request or Proposal
+
+To make a feature request or proposal, you can go to the [🐙 Ocean Protocol Enhancement Proposals (OEPs)](https://github.com/oceanprotocol/OEPs/) repository and write a proposal.
+
+## Write Docs
+
+If you’re writing code, you should also update any related docs. However, you might want to write docs only, such as:
+
+-   General explainers
+-   Tutorials
+-   Courses
+-   Code explanations
+-   News from recent events

content/concepts/development.md

@@ -0,0 +1,11 @@
+---
+title: Development & Governance
+description:
+---
+
+Ocean Protocol uses [C4 Standard process](https://github.com/unprotocols/rfc/blob/master/1/README.md) to manage changes in the source code. Find more details in the respective [OEP-01](https://github.com/oceanprotocol/OEPs/tree/master/1).
+
+We use GitHub as a means for maintaining and tracking issues, roadmap and source code development.
+
+-   [🐙 Ocean Protocol Enhancement Proposals (OEPs)](https://github.com/oceanprotocol/OEPs)
+-   [🕶 dev-ocean](https://github.com/oceanprotocol/dev-ocean): Ocean Engineering Pages with documentation about Development, DevOps, QA, Security, etc.

data/sidebars/concepts.yml

@@ -18,3 +18,10 @@
       link: /concepts/security/
     - title: Reporting vulnerabilities
       link: /concepts/vulnerabilities/
+
+- group: Development
+  items:
+    - title: Overview
+      link: /concepts/development/
+    - title: Contributing
+      link: /concepts/contributing/

src/styles/_variables.scss

@@ -33,9 +33,9 @@ $font-size-text:        $font-size-base;
 $font-size-label:       $font-size-base;
 $font-size-title:       1.4rem;
 $font-size-h1:          3rem;
-$font-size-h2:          2rem;
-$font-size-h3:          1.7rem;
-$font-size-h4:          1.5rem;
+$font-size-h2:          1.7rem;
+$font-size-h3:          1.5rem;
+$font-size-h4:          1.25rem;
 $font-size-h5:          1.125rem;
 
 $font-weight-base:      500;