Try fixing copy button flying out

docs/_posts/2009-10-06-edge-case-broken-highlighting.md

@@ -0,0 +1,33 @@
+---
+title: "Edge Case: Invalid syntax highlight languages"
+categories:
+  - Edge Case
+tags:
+  - content
+  - css
+  - edge case
+---
+
+Good highlighting:
+
+```ruby
+str = ARGV.first
+if str
+  str = str.b[/\A_(.*)_\z/, 1]
+  if str and Gem::Version.correct?(str)
+    version = str
+    ARGV.shift
+  end
+end
+```
+
+Bad highlighting:
+
+```invalid
+if Gem.respond_to?(:activate_bin_path)
+  load Gem.activate_bin_path('jekyll', 'jekyll', version)
+else
+  gem "jekyll", version
+  load Gem.bin_path("jekyll", "jekyll", version)
+end
+```