DevTools: move search in styles out of experimental. It proved to be stable.

Source/devtools/front_end/elementsPanel.css

Index: Source/devtools/front_end/elementsPanel.css
diff --git a/Source/devtools/front_end/elementsPanel.css b/Source/devtools/front_end/elementsPanel.css
index 33447c2e625a57428ae8fb28250908d56b599c97..0e406a72dd903e59baedc12ce6518e93aefa7d87 100644
--- a/Source/devtools/front_end/elementsPanel.css
+++ b/Source/devtools/front_end/elementsPanel.css
@@ -609,12 +609,22 @@
     position: absolute;
 }
 
-input.filter-box {
+.sidebar-pane-filter-box {
+    display: flex;
+    border-top: 1px solid rgb(191, 191, 191);
+    flex-basis: 19px;
+}
+
+.sidebar-pane-filter-box > input {
     outline: none !important;
+    border: none;
+    width: 100%;
+    margin: 0 4px;
+    background: transparent;
 }
 
-.sidebar-pane .filter-box-container > .filter-box {
-    margin: 1px 1px 1px 2px;
+.styles-filter-engaged {
+    background-color: rgba(255, 255, 0, 0.5);
 }
 
 .sidebar-pane.composite .metrics-and-computed .sidebar-pane-toolbar {