Fix: dark styles and header

conf.py

@@ -58,7 +58,7 @@
          "href": "https://www.pyopensci.org/images/favicon.ico",
       },
     ],
-    "announcement": "<p><a href='https://www.pyopensci.org/about-peer-review/index.html'>We run peer review of scientific Python software. Learn more.</a></p>🚧 This guide is currently being developed! 🚧 ",
+    "announcement": "<p><a href='https://www.pyopensci.org/about-peer-review/index.html'>We run peer review of scientific Python software. Learn more.</a></p>",
     #"navbar_center": ["nav"], this can be a way to override the default navigation structure
     "external_links": [
         {

index.md

@@ -130,7 +130,7 @@ contribute.
 
 :::{figure} https://www.pyopensci.org/images/people-building-blocks.jpg
 :align: right
-:width: 300
+:width: 350
 :alt: xkcd comic showing a stick figure on the ground and one in the air. The one on the ground is saying. `You're flying! how?`  The person in the air replies  `Python!` Below is a 3 rectangle comic with the following text in each box. box 1 - I learned it last night. Everything is so simple. Hello world is just print hello world. box 2 - the person on the ground says - come join us programming is fun again. it's a whole new world. But how are you flying? box 3 - the person flying says - i just typed import antigravity. I also sampled everything in the medicine cabinet. But i think this is the python. the person on the ground is saying - that's it?
 :::