Adds logo to docs (zarr-developers#462)

* Adds logo + custom css to docs

* Adds sphinx-rtd-theme to requirements

docs/_static/custom.css

@@ -0,0 +1,32 @@
+
+/* Sidebar background color */
+.wy-nav-side, div.wy-side-nav-search {
+  background-color: rgb(38, 34, 98);
+}
+
+/* Sidebar link click color */
+.wy-menu-vertical .toctree-l1 > a:active {
+  background-color: rgb(38, 34, 98);
+  color: rgb(252, 252, 252);
+}
+
+/* Link color is darker to make hovering more clear */
+.wy-menu-vertical .toctree-l1 > a:hover {
+  background-color: rgb(25, 22, 65);
+  color: rgb(252, 252, 252);
+}
+
+.wy-menu-vertical li.current > a:hover, .wy-menu-vertical li.current > a:active {
+  color: #404040;
+  background-color: #F5F5F5;
+}
+
+/* On hover over logo */
+.wy-side-nav-search > a:hover, .wy-side-nav-search .wy-dropdown > a:hover {
+  background: inherit;
+}
+
+/* Border around search box */
+.wy-side-nav-search input[type="text"] {
+  border: 0px;
+}

docs/conf.py

@@ -123,12 +123,12 @@
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-html_theme = 'default'
+html_theme = 'sphinx_rtd_theme'
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the
 # documentation.
-#html_theme_options = {}
+html_theme_options = {'logo_only': True}
 
 # Add any paths that contain custom themes here, relative to this directory.
 #html_theme_path = []
@@ -142,7 +142,11 @@
 
 # The name of an image file (relative to this directory) to place at the top
 # of the sidebar.
-#html_logo = None
+html_logo = '_static/logo1.png'
+
+# Add custom css
+def setup(app):
+    app.add_stylesheet('custom.css')
 
 # The name of an image file (relative to this directory) to use as a favicon of
 # the docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32

requirements_rtfd.txt

@@ -3,5 +3,6 @@ setuptools
 setuptools_scm
 sphinx
 sphinx-issues
+sphinx-rtd-theme
 numpydoc
 numpy