diff --git a/src/infrastructure/presentation/nodeWatcher/handlers/CssSelectorHandler.adapter.ts b/src/infrastructure/presentation/nodeWatcher/handlers/CssSelectorHandler.adapter.ts
new file mode 100644
index 0000000..bf57020
--- /dev/null
+++ b/src/infrastructure/presentation/nodeWatcher/handlers/CssSelectorHandler.adapter.ts
@@ -0,0 +1,32 @@
+import {
+  NodeMutation,
+  NodeMutationType,
+  NodeWatcherHandler,
+} from '../../../../presentation/nodeWatcher/NodeWatcherHandler';
+
+export default abstract class CssSelectorNodeWatcherHandler
+  implements NodeWatcherHandler
+{
+  readonly mutationTypesProcessed: NodeMutationType[] = [
+    NodeMutationType.InitialDiscovery,
+    NodeMutationType.NewNode,
+  ];
+
+  abstract readonly cssSelector: string;
+
+  nodeFilter(nodeMutation: NodeMutation): boolean {
+    if (
+      !this.mutationTypesProcessed.includes(nodeMutation.type) ||
+      !(nodeMutation.node instanceof Element)
+    ) {
+      return false;
+    }
+    return nodeMutation.node.matches(this.cssSelector);
+  }
+
+  get initialDiscoverySelector() {
+    return this.cssSelector;
+  }
+
+  abstract onMutatedNode(nodeMutation: NodeMutation): void;
+}