1 files changed, 116 insertions, 0 deletions
diff --git a/layout/style/res/viewsource.css b/layout/style/res/viewsource.css
new file mode 100644
index 0000000000..6bcf73faa6
--- /dev/null
+++ b/layout/style/res/viewsource.css
@@ -0,0 +1,116 @@
+@charset "utf-8";
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+@namespace url(http://www.w3.org/1999/xhtml); /* set default namespace to HTML */
+
+*|*:root {
+  color-scheme: light dark;
+  direction: ltr;
+  -moz-control-character-visibility: visible;
+  height: 100%;
+}
+#viewsource {
+  font-family: -moz-fixed;
+  font-weight: normal;
+  white-space: pre;
+  counter-reset: line;
+  height: 100%;
+  box-sizing: border-box;
+  margin: 0;
+  padding: 8px;
+}
+#viewsource.wrap {
+  white-space: pre-wrap;
+  word-wrap: break-word;
+}
+pre {
+  font: inherit;
+  color: inherit;
+  white-space: inherit;
+  margin: 0 0 0 5ch;
+}
+pre[id]:before,
+span[id]:before {
+  content: counter(line) " ";
+  counter-increment: line;
+  user-select: none;
+  display: inline-block;
+  width: 5ch;
+  margin: 0 0 0 -5ch;
+  text-align: right;
+  color: #ccc;
+  font-weight: normal;
+  font-style: normal;
+}
+.highlight .start-tag,
+.highlight .end-tag {
+  color: purple;
+  font-weight: bold;
+}
+.highlight .comment {
+  color: green;
+  font-style: italic;
+}
+.highlight .cdata {
+  color: #CC0066;
+}
+.highlight .doctype,
+.highlight .markupdeclaration {
+  color: steelblue;
+  font-style: italic;
+}
+.highlight .pi {
+  color: orchid;
+  font-style: italic;
+}
+.highlight .entity {
+  color: #FF4500;
+  font-weight: normal;
+}
+.highlight .text {
+  font-weight: normal;
+}
+.highlight .attribute-name {
+  font-weight: bold;
+}
+.highlight .attribute-value {
+  color: blue;
+  font-weight: normal;
+}
+span:not(.error),
+a:not(.error) {
+  unicode-bidi: embed;
+}
+span[id] {
+  unicode-bidi: isolate;
+}
+.highlight .error {
+  color: revert;
+  font-weight: bold;
+  background-color: rgba(231, 116, 113, 0.3);
+  text-decoration: underline wavy red 0.5px;
+}
+@media (prefers-color-scheme: dark) {
+  .highlight .start-tag,
+  .highlight .end-tag {
+    color: #f55e5e;
+  }
+  .highlight .comment {
+    color: lightgreen;
+  }
+  .highlight .cdata {
+    color: #f068ac;
+  }
+  .highlight .doctype,
+  .highlight .markupdeclaration {
+    color: lightgray;
+  }
+  .highlight .entity {
+    color: #f18a65;
+  }
+  .highlight .attribute-value {
+    color: #97bbff;
+  }
+}