Minor improvements

pages/frontpage/frontpage.scarlet

@@ -1,3 +1,14 @@
+frontpage-bg-color = rgb(32, 32, 32)
+
+.frontpage-background
+	position absolute
+	top 0
+	left 0
+	width 100%
+	height 100%
+	z-index -200
+	background frontpage-bg-color
+
 .frontpage
 	vertical
 	align-items center
@@ -30,6 +41,7 @@
 		margin-top content-padding
 
 .bg-video
+	display none
 	position absolute
 	top 50%
 	left 50%
@@ -39,7 +51,11 @@
 	width auto
 	height auto
 	z-index -100
-	background rgb(32, 32, 32)
+	background frontpage-bg-color
+
+> 1100px
+	.bg-video
+		display block
 
 .login-button
 	horizontal