Add styles for the 'categories footer'

I feel bad adding another entire style file, but the overhead should
still be pretty dang minimal since this just adjusts a couple of styling
bits and bobs.

Signed-off-by: Kristofer Rye <[email protected]>

Author: rye

app/styles/app.scss

@@ -13,6 +13,7 @@ $link-color: rgb(0, 172, 91);
 @import "application";
 @import "home";
 @import "category-slugs";
+@import "categories";
 @import "crate";
 @import "crate/version";
 @import "components/crate-toml-copy";

app/styles/categories.scss

@@ -0,0 +1,8 @@
+/* Styles for the /categories page */
+
+.categories-footer {
+	width: 100%;
+	padding: 1em;
+	text-align: center;
+	font-size: 85%;
+}