Update margin-right declaration

This PR addresses https://github.com/a11yproject/a11yproject.com/issues/974, based on feedback from @jendowns.

src/_includes/layouts/base.njk

@@ -7,7 +7,7 @@
 		<meta name="viewport" content="width=device-width, initial-scale=1.0" />
 		{% include "meta/social-media.njk" %}
 		{% include "meta/icons.njk" %}
-		<link rel="stylesheet" as="style" href="{{ '/css/screen.min.css?v=20200719a' | url }}" />
+		<link rel="stylesheet" as="style" href="{{ '/css/screen.min.css?v=20200720a' | url }}" />
 		<link rel="alternate" href="{{ metadata.feed.path | url }}" type="application/atom+xml" title="{{ metadata.title }}" />
 		<link rel="sitemap" type="application/xml" title="{{ metadata.title }}" href="{{ '/sitemap.xml' | url }}" />
 		<link rel="author" href="/humans.txt" />

src/css/components/_c-homepage-card.scss

@@ -16,7 +16,10 @@
 
 
 .c-homepage-card--spotlight {
-	margin-right: 4rem;
+	// Breakpoints
+	@include mappy-bp(wrist-large) {
+		margin-right: 4rem;
+	}
 
 	// Supports
 	@supports #{$supports-flex} {