fix: put 3.5rem on cfp button, not content area

Author: JoshuaKGoldberg

src/components/LaunchSpeakers.astro

@@ -67,6 +67,7 @@ const launchSpeakers = [
 
 	<Button
 		as="a"
+		class="cfp-button"
 		href={links.cfp}
 		size="large"
 		target="_blank"
@@ -82,7 +83,6 @@ const launchSpeakers = [
 		display: flex;
 		flex-direction: column;
 		gap: 2rem;
-		padding-bottom: 3.5rem;
 	}
 
 	.launch-speakers-description {
@@ -95,4 +95,8 @@ const launchSpeakers = [
 		margin-top: 3.5rem;
 		text-align: center;
 	}
+
+	.cfp-button {
+		margin-bottom: 3.5rem;
+	}
 </style>