Index: src/wp-content/themes/twentyseventeen/assets/css/colors-dark.css
===================================================================
--- src/wp-content/themes/twentyseventeen/assets/css/colors-dark.css	(revision 39383)
+++ src/wp-content/themes/twentyseventeen/assets/css/colors-dark.css	(working copy)
@@ -474,8 +474,8 @@
 }
 
 /* Fixes linked images */
-.entry-content a img,
-.widget a img {
+.colors-dark .entry-content a img,
+.colors-dark .widget a img {
 	-webkit-box-shadow: 0 0 0 8px #222;
 	box-shadow: 0 0 0 8px #222;
 }
@@ -496,6 +496,9 @@
 	background-color: transparent;
 }
 
+.colors-dark .gallery-item a,
+.colors-dark .gallery-item a:hover,
+.colors-dark .gallery-item a:focus,
 .colors-dark .widget .tagcloud a,
 .colors-dark .widget .tagcloud a:focus,
 .colors-dark .widget .tagcloud a:hover,
Index: src/wp-content/themes/twentyseventeen/style.css
===================================================================
--- src/wp-content/themes/twentyseventeen/style.css	(revision 39383)
+++ src/wp-content/themes/twentyseventeen/style.css	(working copy)
@@ -2939,7 +2939,7 @@
 	box-shadow: none;
 	background: none;
 	display: inline-block;
-	width: 100%;
+	max-width: 100%;
 }
 
 .gallery-item a img {