Clean up.

devtools/panel/panel.css

@@ -60,75 +60,6 @@ body {
 	margin-left: 0;
 }
 
-.properties-list {
-	font-family: monospace;
-	font-size: 11px;
-	margin: 4px 0;
-	padding: 4px 0;
-	border-left: 1px solid #eee;
-}
-
-.properties-section {
-	margin-bottom: 8px;
-}
-
-.properties-header {
-	color: #666;
-	font-weight: bold;
-	padding: 4px 0;
-	padding-left: 16px; /* Align header with items */
-	user-select: none;
-	margin-bottom: 4px; /* Add space below header */
-}
-
-.property-item {
-	padding: 2px 16px;
-	display: flex;
-	align-items: center;
-}
-
-.property-name {
-	color: #666;
-	margin-right: 8px;
-	min-width: 120px;
-}
-
-.property-value {
-	color: #333;
-}
-
-.visibility-btn {
-	background: none;
-	border: none;
-	cursor: pointer;
-	padding: 2px 6px;
-	font-size: 12px;
-	opacity: 0.5;
-	border-radius: 4px;
-	margin-right: 4px;
-}
-
-.visibility-btn:hover {
-	background: #e0e0e0;
-	opacity: 1;
-}
-
-.tree-item:hover .visibility-btn {
-	opacity: 0.8;
-}
-
-/* Styles for two-column layout */
-.properties-grid {
-	display: flex;
-	flex-direction: row;
-	gap: 24px; /* Space between columns */
-}
-.properties-column-left,
-.properties-column-right {
-	flex: 1; /* Each column takes equal width */
-}
-/* End styles for two-column layout */
-
 /* Style for clickable renderer summary */
 .renderer-summary {
 	cursor: pointer;