switch to book theme

Change-Id: I2f5f916907be08c1eb747ed7d6fff9426c51a7ec

docs/build/conf.py

@@ -127,9 +127,7 @@
 
 # The theme to use for HTML and HTML Help pages.  Major themes that come with
 # Sphinx are currently 'default' and 'sphinxdoc'.
-html_theme = "nature"
-
-html_style = "nature_override.css"
+html_theme = "sphinx_book_theme"
 
 
 # Theme options are theme-specific and customize the look and feel of a theme
@@ -161,6 +159,8 @@
 # so a file named "default.css" will overwrite the builtin "default.css".
 html_static_path = ["_static"]
 
+html_css_files = ["site_custom_css.css"]
+
 # If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
 # using the given strftime format.
 # html_last_updated_fmt = '%b %d, %Y'
@@ -176,9 +176,10 @@
 html_sidebars = {
     "**": [
         "site_custom_sidebars.html",
-        "localtoc.html",
-        "searchbox.html",
-        "relations.html",
+        "navbar-logo.html",
+        "icon-links.html",
+        "search-button-field.html",
+        "sbt-sidebar-nav.html",
     ]
 }
 

docs/build/index.rst

@@ -68,6 +68,9 @@ way using the `greenlet <https://pypi.org/project/greenlet/>`_ library.  The sou
 to adapt :func:`.awaitlet` function calls to real Python ``await`` keywords.
 
 
+Contents in this Document
+==========================
+
 .. toctree::
    :maxdepth: 2
 

docs/build/requirements.txt

@@ -4,5 +4,7 @@ sphinx
 greenlet
 typing_extensions
 sphinx_copybutton==0.5.1
+sphinx-book-theme
+