Replace spaces with tabs in blog post

Another feature ripped off from Drew DeVault's website.

posts/2021-03-29-gentoo-overlays-for-noobs.md

@@ -185,10 +185,10 @@ of how to configure Meson based on USE flags, so I will blatantly copy that.
 
 ```
 src_configure() {{
-        local emesonargs=(
-                $(meson_feature man man-pages)
-        )
-        meson_src_configure
+	local emesonargs=(
+		$(meson_feature man man-pages)
+	)
+	meson_src_configure
 }}
 ```
 

scripts/template_md.py

@@ -3,9 +3,10 @@
 import sys
 import markdown
 from template import template
+from pymdownx.superfences import SuperFencesCodeExtension
 
 def main():
-	md = markdown.Markdown(extensions = ["meta", "extra"])
+	md = markdown.Markdown(extensions = ["meta", "extra", "toc", SuperFencesCodeExtension(preserve_tabs=True)])
 	with open(sys.argv[1], "r", encoding="utf-8") as file_in:
 		html = md.convert(file_in.read())
 	output = template(html, sys.argv[2], ".html", md.Meta) if "template" in md.Meta else html

static/style.css

@@ -172,7 +172,11 @@ div.block:first-of-type, div.block-small {
 }
 
 pre {
-	white-space: pre-wrap;
+	line-height: 1.5;
+	font-size: 14px;
+	background-color: #EEEEEE;
+	padding: 6px;
+	overflow: auto;
 }
 
 div.articles {