Twenty Seventeen: Fix CSS specificity problem with CSS feature query …

…for `object-fit`

Previously, the theme's CSS feature query for `object-fit` overrode styles it shouldn't have on interior pages.

This moves the feature query farther down in the stylesheet so it takes precedence in the cascade in supported browsers, and applies the appropriate selector for the interior pages. In browsers that don't support feature queries or `object-fit`, the fallback styles are still applied. The problem was that the rules had the same specificity, so this way, the cascade takes over properly. The transforms and position changes for fallbacks are still needed in browsers that don't support `object-fit` and feature queries.

Props peterwilsoncc, davidakennedy.

Fixes #39073.

Built from https://develop.svn.wordpress.org/trunk@39495


git-svn-id: http://core.svn.wordpress.org/trunk@39435 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-content/themes/twentyseventeen/style.css

@@ -1690,24 +1690,6 @@ body:not(.title-tagline-hidden) .site-branding-text {
 	transform: translateX(-50%) translateY(-50%);
 }
 
-/* For browsers that support 'object-fit' */
-@supports ( object-fit: cover ) {
-	.has-header-image .custom-header-media img,
-	.has-header-video .custom-header-media video,
-	.has-header-video .custom-header-media iframe {
-		height: 100%;
-		left: 0;
-		-o-object-fit: cover;
-		object-fit: cover;
-		top: 0;
-		-ms-transform: none;
-		-moz-transform: none;
-		-webkit-transform: none;
-		transform: none;
-		width: 100%;
-	}
-}
-
 .wp-custom-header .wp-custom-header-video-button { /* Specificity prevents .color-dark button overrides */
 	background-color: rgba(34, 34, 34, 0.5);
 	border: 1px solid rgba(255, 255, 255, 0.6);
@@ -1744,6 +1726,25 @@ body:not(.title-tagline-hidden) .site-branding-text {
 	transform: translateX(-50%) translateY(0);
 }
 
+/* For browsers that support 'object-fit' */
+@supports ( object-fit: cover ) {
+	.has-header-image .custom-header-media img,
+	.has-header-video .custom-header-media video,
+	.has-header-video .custom-header-media iframe,
+	.has-header-image:not(.twentyseventeen-front-page):not(.home) .custom-header-media img {
+		height: 100%;
+		left: 0;
+		-o-object-fit: cover;
+		object-fit: cover;
+		top: 0;
+		-ms-transform: none;
+		-moz-transform: none;
+		-webkit-transform: none;
+		transform: none;
+		width: 100%;
+	}
+}
+
 /* Hides div in Customizer preview when header images or videos change. */
 
 body:not(.has-header-image):not(.has-header-video) .custom-header-media {

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.8-alpha-39494';
+$wp_version = '4.8-alpha-39495';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.