1 files changed, 43 insertions, 0 deletions
diff --git a/devtools/client/aboutdebugging/src/components/debugtarget/DebugTargetPane.css b/devtools/client/aboutdebugging/src/components/debugtarget/DebugTargetPane.css
new file mode 100644
index 0000000000..616b4ac28c
--- /dev/null
+++ b/devtools/client/aboutdebugging/src/components/debugtarget/DebugTargetPane.css
@@ -0,0 +1,43 @@
+/* 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/. */
+
+/*
+ *  Style for the heading of a debug target pane
+ *  +-----------------+---------------+-----------------+
+ *  | [Category icon] | Category name | [Collapse icon] |
+ *  +-----------------+---------------+-----------------+
+ */
+.debug-target-pane__heading {
+  grid-template-columns: var(--main-subheading-icon-size) max-content calc(var(--base-unit) * 3);
+  user-select: none;
+}
+
+.debug-target-pane__icon {
+  transition: transform 150ms cubic-bezier(.07, .95, 0, 1);
+  transform: rotate(90deg);
+}
+
+.debug-target-pane__icon--collapsed {
+  transform: rotate(0deg);
+}
+
+.debug-target-pane__icon--collapsed:dir(rtl) {
+  transform: rotate(180deg);
+}
+
+.debug-target-pane__title {
+  cursor: pointer;
+}
+
+.debug-target-pane__collapsable {
+  overflow: hidden;
+  /* padding will give space for card shadow to appear and
+     margin will correct the alignment */
+  margin-inline: calc(var(--card-shadow-blur-radius) * -1);
+  padding-inline: var(--card-shadow-blur-radius);
+}
+
+.debug-target-pane__collapsable--collapsed {
+  max-height: 0;
+}