finish development category and improve style

docs/source/_static/custom.css

@@ -1,3 +1,11 @@
+span.caption-text {
+    font-size: larger;
+}
+
+span.pre {
+    font-size: initial;
+}
+
 .highlight-python.notranslate {
     margin-top: 0em;
 }

docs/source/development/about.rst

@@ -1,3 +1,31 @@
 About
 =====
-WIP
+
+About Manim
+-----------
+
+Manim is an animation engine for explanatory math videos. 
+You can use it to make math videos (or other fields) like 3Blue1Brown.
+
+There are mainly two versions here:
+
+- `3b1b/manim <https://github.com/3b1b/manim>`_ : Maintained by Grant Sanderson of 3Blue1Brown.
+
+Using OpenGL and its GLSL language to use GPU for rendering. It has higher efficiency, 
+faster rendering speed, and supports real-time rendering and interaction.
+
+- `ManimCommunity/manim <https://github.com/ManimCommunity/manim>`_ : Maintained by Manim Community Dev Team.
+
+Using cairo to use CPU for rendering. There is better documentation and 
+a more open contribution community.
+
+About this documentation
+------------------------
+
+This documentation is based on the version in `3b1b/manim <https://github.com/3b1b/manim>`_. 
+Created by `TonyCrane <https://github.com/TonyCrane>`_ and in production.
+
+Among them, the ``manim_example_ext`` extension for Sphinx refers to 
+`the documentation of ManimCommunity <https://docs.manim.community/>`_.
+
+If you want to contribute to manim or this document, please see: :doc:`contributing`

docs/source/development/changelog.rst

@@ -1,3 +1,4 @@
 Changelog
 =========
-WIP
+
+No changes now.

docs/source/development/contributing.rst

@@ -0,0 +1,59 @@
+Contributing
+============
+
+Accept any contribution you make :)
+
+- **Contribute to the manim source code**: 
+
+Please fork to your own repository and make changes, submit a pull request, and fill in 
+the motivation for the change following the instructions in the template. We will check 
+your pull request in detail (this usually takes a while, please be patient)
+
+- **Contribute to the documentation**: 
+
+Also submit a pull request and write down the main changes.
+
+- **If you find a bug in the code**: 
+
+Please open an issue and fill in the found problem and your environment according 
+to the template. (But please note that if you think this problem is just a problem 
+of yourself, rather than a problem of source code, it is recommended that you ask a 
+question in the `Q&A category <https://github.com/3b1b/manim/discussions/categories/q-a>`_ 
+of the discussion page)
+
+- **You are welcome to share the content you made with manim**: 
+
+Post it in the `show and tell category <https://github.com/3b1b/manim/discussions/categories/show-and-tell>`_
+of the discussion page.
+
+- **You are also welcome to share some of your suggestions and ideas**: 
+
+Post them in the `ideas category <https://github.com/3b1b/manim/discussions/categories/ideas>`_ 
+of the discussion page.
+
+How to build this documentation
+-------------------------------
+
+- Clone the 3b1b/manim repository
+
+.. code-block:: sh
+
+    git clone https://github.com/3b1b/manim.git
+    # or your own repo
+    # git clone https://github.com/<your user name>/manim.git
+    cd manim
+
+- Install python package dependencies
+
+.. code-block:: sh
+
+    pip install -r docs/requirements.txt
+
+- Go to the ``docs/`` folder and build
+
+.. code-block:: sh
+
+    cd docs/
+    make html
+
+- The output document is located in ``docs/build/html/``

docs/source/development/contribution.rst

@@ -1,3 +0,0 @@
-Contribution
-============
-WIP

docs/source/getting_started/installation.rst

@@ -3,10 +3,12 @@ Installation
 
 Manim runs on Python 3.8.
 
-System requirements are `FFmpeg <https://ffmpeg.org/>`__,
-`OpenGL <https://www.opengl.org//>`__ and
-`latex <https://www.latex-project.org>`__ (optional, if you want to use
-LaTeX).
+System requirements are：
+
+- `FFmpeg <https://ffmpeg.org/>`__
+- `OpenGL <https://www.opengl.org//>`__ (included in python package ``PyOpenGL``)
+- `LaTeX <https://www.latex-project.org>`__ (optional, if you want to use LaTeX)
+- `cairo <https://www.cairographics.org/>`_ (included in python package ``pycairo``. optional, if you want to use ``Text`` in manim)
 
 Directly
 --------
@@ -26,9 +28,9 @@ Directly (Windows)
 ------------------
 
 1. `Install
-   FFmpeg <https://www.wikihow.com/Install-FFmpeg-on-Windows>`__.
+   FFmpeg <https://www.wikihow.com/Install-FFmpeg-on-Windows>`__, and make sure that its path is in the PATH environment variable.
 2. Install a LaTeX distribution.
-   `MiKTeX <https://miktex.org/download>`__ is recommended.
+   `TeXLive-full <http://tug.org/texlive/>`__ is recommended.
 3. Install the remaining Python packages.
 
 .. code:: sh  
@@ -39,16 +41,21 @@ Directly (Windows)
    python manim.py example_scenes.py OpeningManimExample
 
 For Anaconda
-----------------
+------------
 
--  Install latex as above.
+-  Install FFmpeg and LaTeX as above.
 -  Create a conda environment using
-   ``conda env create -f environment.yml``
+
+.. code-block:: sh
+   
+   git clone https://github.com/3b1b/manim.git
+   cd manim 
+   conda env create -f environment.yml
 
 Using virtualenv and virtualenvwrapper
-----------------------------------------------
+--------------------------------------
 
-After installing virtualenv and virtualenvwrapper
+After installing ``virtualenv`` and ``virtualenvwrapper``
 
 .. code:: sh
 

docs/source/index.rst

@@ -31,13 +31,5 @@ at `3Blue1Brown <https://www.3blue1brown.com/>`_.
    :caption: Development
 
    development/changelog
-   development/contribution
+   development/contributing
    development/about
-
-
-
-Indices and tables
-==================
-
-* :ref:`genindex`
-* :ref:`search`