diff --git a/data/rules.json b/data/rules.json
index 2386107..06f681a 100644
--- a/data/rules.json
+++ b/data/rules.json
@@ -32,12 +32,6 @@
   {
     "disabled": false,
     "target": "",
-    "operator": "injectJSCode",
-    "destination": "\n  const app = document.createElement(\"gr-app\");\n  app.id = \"app\";\n  document.querySelector(\"#app\").replaceWith(app);\n  "
-  },
-  {
-    "disabled": false,
-    "target": "",
     "operator": "injectHtmlCode",
     "destination": "<span style=\"color: white;font-weight:bold;padding:10px;z-index:10000;display:block;position:fixed;bottom:0;right:0;background-color:red;\">Gerrit dev helper is enabled</span>"
   }
diff --git a/release-notes.md b/release-notes.md
index c3b2f9f..e27b48b 100644
--- a/release-notes.md
+++ b/release-notes.md
@@ -1,3 +1,9 @@
+#### v0.0.5
+
+- set crossorigin to anonymous to help debug js error from plugin
+- improve the ui on popup
+- remove outdated rule of replacing gr-app-p2 with gr-app
+
 #### v0.0.4
 
 - A better way to wait for Gerrit when injecting html plugins
diff --git a/src/content_script.ts b/src/content_script.ts
index 0caabb6..e0fa3e7 100644
--- a/src/content_script.ts
+++ b/src/content_script.ts
@@ -49,6 +49,7 @@
         onGerritReady().then(() => {
           const link = document.createElement('script');
           link.setAttribute('src', rule.destination);
+          link.setAttribute('crossorigin', 'anonymous');
           document.head.appendChild(link);
         });
       } else if (rule.operator === Operator.INJECT_JS_CODE) {
diff --git a/src/manifest.json b/src/manifest.json
index faec7c2..ba31029 100644
--- a/src/manifest.json
+++ b/src/manifest.json
@@ -1,41 +1,39 @@
 {
-    "manifest_version": 2,
-    "name": "Gerrit FE Dev Helper",
-    "description": "This extension can help you development on gerrit sites, frontend specifically",
-    "version": "0.0.4",
-    "browser_action": {
-      "default_icon": "gray-32.png",
-      "default_title": "Gerrit FE Dev Helper"
-    },
-    "background": {
-      "scripts": [
-        "background.js"
-      ],
-      "persistent": true
-    },
-
-    "content_scripts": [
-      {
-        "run_at": "document_end",
-        "matches": [
-          "<all_urls>"
-        ],
-        "js": [
-          "content_script.js"
-        ]
-      }
+  "manifest_version": 2,
+  "name": "Gerrit FE Dev Helper",
+  "description": "This extension can help you development on gerrit sites, frontend specifically",
+  "version": "0.0.5",
+  "browser_action": {
+    "default_icon": "gray-32.png",
+    "default_title": "Gerrit FE Dev Helper"
+  },
+  "background": {
+    "scripts": [
+      "background.js"
     ],
-    "content_security_policy": "default-src 'none'; script-src 'self'; style-src 'unsafe-inline'; connect-src https://*",
-    "permissions": [
-      "debugger",
-      "activeTab",
-      "<all_urls>",
-      "notifications",
-      "storage",
-      "tabs",
-      "webRequest",
-      "webRequestBlocking",
-      "declarativeContent"
-    ]
-  }
-  
\ No newline at end of file
+    "persistent": true
+  },
+  "content_scripts": [
+    {
+      "run_at": "document_end",
+      "matches": [
+        "<all_urls>"
+      ],
+      "js": [
+        "content_script.js"
+      ]
+    }
+  ],
+  "content_security_policy": "default-src 'none'; script-src 'self'; style-src 'unsafe-inline'; connect-src https://*",
+  "permissions": [
+    "debugger",
+    "activeTab",
+    "<all_urls>",
+    "notifications",
+    "storage",
+    "tabs",
+    "webRequest",
+    "webRequestBlocking",
+    "declarativeContent"
+  ]
+}
\ No newline at end of file
diff --git a/src/popup.ts b/src/popup.ts
index fa30ecd..9811f90 100644
--- a/src/popup.ts
+++ b/src/popup.ts
@@ -178,14 +178,25 @@
           padding: 10px;
         }
         button {
+          font-family: Roboto, sans-serif;
+          font-size: .875rem;
+          font-weight: 500;
+          text-transform: uppercase;
+          user-select: none;
+          box-sizing: content-box;
+          border-radius: 4px;
+          border: 1px solid #333;
           padding: 5px;
+          cursor: pointer;
+          outline: none;
         }
-
+        button:hover {
+          background-color: #f4f0fa;
+        }
         header {
           display: flex;
           flex-direction: row-reverse;
         }
-
         textarea {
           min-width: 500px;
           min-height: 500px;
@@ -362,6 +373,14 @@
         textarea {
           flex: 1;
           min-width: 220px;
+          outline: none;
+          border: none;
+          border-bottom: 1px solid #ccc;
+        }
+        input[type="text"]:focus,
+        textarea:focus {
+          border-bottom: 1px solid #3c88fd;
+          background: #9dc3fd;
         }
         input[disabled],
         textarea[disabled] {
@@ -396,7 +415,7 @@
 
   render() {
     return html`
-        <label for="trigger">
+        <label for="trigger" @click=${this.toggleVisible}>
           <div class="selected-value">${this.items[this.selectedIndex]}</div>
           <input
             .checked=${this.isVisible}
@@ -412,6 +431,7 @@
             </li>
             `)}
           </ul>
+          <i></i>
         </label>
         `;
   }
@@ -423,6 +443,21 @@
           display: flex;
           flex-direction: column;
         }
+        label {
+          background-color: #f1f1f1;
+          margin: 0 5px;
+        }
+        i {
+          position: absolute;
+          top: 10px;
+          right: 15px;
+          border: solid #555;
+          border-width: 0 3px 3px 0;
+          display: inline-block;
+          padding: 3px;
+          transform: rotate(45deg);
+          -webkit-transform: rotate(45deg);
+        }
         .selected-value {
           padding: 8px 15px;
           min-width: 100px;
@@ -445,9 +480,11 @@
           top: 0;
           width: 100%;
           height: 100%;
-        }
+          cursor: pointer;
+       }
         input:checked + ul {
           display: block;
+          box-shadow: 0 2px 1px -1px rgba(0, 0, 0, 0.2),0 1px 1px 0 rgba(0, 0, 0, 0.14),0 1px 3px 0 rgba(0,0,0,.12);
         }
         input:checked + ul li:hover {
           background: #ddd;
@@ -460,6 +497,10 @@
         input:checked + ul li.active:hover {
           background-color: #fff;
         }
+        input:checked + ul + i {
+          transform: rotate(-135deg);
+          -webkit-transform: rotate(-135deg);
+        }
         `;
   }
 }