Index: src/wp-content/themes/twentyseventeen/assets/js/global.js
===================================================================
--- src/wp-content/themes/twentyseventeen/assets/js/global.js	(revision 38884)
+++ src/wp-content/themes/twentyseventeen/assets/js/global.js	(working copy)
@@ -10,7 +10,7 @@
 			$navWrap = $navigation.find( '.wrap' ),
 			$navMenuItem = $navigation.find( '.menu-item' ),
 			$menuToggle = $navigation.find( '.menu-toggle' ),
-			$menuScrollDown = $navigation.find( '.menu-scroll-down' ),
+			$menuScrollDown = $body.find( '.menu-scroll-down' ),
 			$sidebar = $body.find( '#secondary' ),
 			$entryContent = $body.find( '.entry-content' ),
 			$formatQuote = $body.find( '.format-quote blockquote' ),
@@ -143,7 +143,7 @@
 	$( document ).ready( function() {
 
 		// Let's fire some JavaScript!
-		if ( 'true' === twentyseventeenScreenReaderText.has_navigation ) {
+		if ( $menuScrollDown.length ) {
 
 			/**
 			 * 'Scroll Down' arrow in menu area
Index: src/wp-content/themes/twentyseventeen/style.css
===================================================================
--- src/wp-content/themes/twentyseventeen/style.css	(revision 38884)
+++ src/wp-content/themes/twentyseventeen/style.css	(working copy)
@@ -1463,7 +1463,7 @@
 
 /* Scroll down arrow */
 
-.navigation-top .menu-scroll-down {
+.site-header .menu-scroll-down {
 	display: none;
 }
 
@@ -3513,14 +3513,13 @@
 		display: none;
 	}
 
-	.site-navigation-fixed.navigation-top .menu-scroll-down {
+	.site-navigation-fixed.site-header.menu-scroll-down {
 		display: none;
 	}
 
 	/* Scroll down arrow */
 
-	.navigation-top .menu-scroll-down {
-		color: #767676;
+	.site-header .menu-scroll-down {
 		display: block;
 		padding: 0.5em 0.5em 0.4em;
 		position: absolute;
@@ -3531,6 +3530,14 @@
 		transform: rotate(90deg);
 	}
 
+	.site-header .menu-scroll-down {
+		color: #fff;
+	}
+
+	.site-header .navigation-top .menu-scroll-down {
+		color: #767676;
+	}
+
 	.menu-scroll-down:focus {
 		outline: thin dotted;
 	}
Index: src/wp-content/themes/twentyseventeen/template-parts/header/site-branding.php
===================================================================
--- src/wp-content/themes/twentyseventeen/template-parts/header/site-branding.php	(revision 38884)
+++ src/wp-content/themes/twentyseventeen/template-parts/header/site-branding.php	(working copy)
@@ -27,5 +27,9 @@
 				<?php endif; ?>
 		</div><!-- .site-branding-text -->
 
+		<?php if ( ( twentyseventeen_is_frontpage() || ( is_home() && is_front_page() ) ) && ! has_nav_menu( 'top' ) ) : ?>
+		<a href="#content" class="menu-scroll-down"><?php echo twentyseventeen_get_svg( array( 'icon' => 'next' ) ); ?><span class="screen-reader-text"><?php _e( 'Scroll Down', 'twentyseventeen' ); ?></span></a>
+	<?php endif; ?>
+
 	</div><!-- .wrap -->
 </div><!-- .site-branding -->