+#inspector-breadcrumbs .html-arrowscrollbox-inner {
+ flex: 1;
+ display: flex;
+ overflow: hidden;
+}
+
+#inspector-breadcrumbs .breadcrumbs-widget-item {
+ white-space: nowrap;
+ flex-shrink: 0;
+ font: 11px "Liberation Sans",Arial,Tahoma,Helvetica,sans-serif;
+}
+
+#inspector-sidebar-container {
+ overflow: hidden;
+ position: relative;
+ height: 100%;
+}
+
+#inspector-sidebar {
+ position: absolute;
+ top: 0;
+ bottom: 0;
+ left: 0;
+ right: 0;
+}
+
+/* Override `-moz-user-focus:ignore;` from toolkit/content/minimal-xul.css */
+.inspector-tabpanel > * {
+ -moz-user-focus: normal;
+}
+
+/* "no results" warning message displayed in the ruleview and in the computed view */
+
+#ruleview-no-results,
+#computedview-no-results {
+ color: var(--theme-body-color-inactive);
+ text-align: center;
+ margin: 5px;
+}
+
+/* Markup Box */
+
+iframe {
+ border: 0;
+}
+
+#markup-box {
+ width: 100%;
+ flex: 1;
+ min-height: 0;
+}
+
+#markup-box > iframe {
+ height: 100%;
+ width: 100%;