From cdb24abeb2514b0eab96defbb13b5e64e5223139 Mon Sep 17 00:00:00 2001
From: Michael Schmidt <mitchi5000.ms@googlemail.com>
Date: Mon, 28 Dec 2020 19:25:05 +0100
Subject: [PATCH] Line Highlight: Fixed print background color (#2668)

---
 plugins/line-highlight/prism-line-highlight.css | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/plugins/line-highlight/prism-line-highlight.css b/plugins/line-highlight/prism-line-highlight.css
index 1262b9a342..ae47c89a28 100644
--- a/plugins/line-highlight/prism-line-highlight.css
+++ b/plugins/line-highlight/prism-line-highlight.css
@@ -19,6 +19,17 @@ pre[data-line] {
 	white-space: pre;
 }
 
+@media print {
+	.line-highlight {
+		/*
+		 * This will prevent browsers from replacing the background color with white.
+		 * It's necessary because the element is layered on top of the displayed code.
+		 */
+		-webkit-print-color-adjust: exact;
+		color-adjust: exact;
+	}
+}
+
 	.line-highlight:before,
 	.line-highlight[data-end]:after {
 		content: attr(data-start);