diff --git a/README.md b/README.md
index 0fa0575..332a17c 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,8 @@ React Native renderer for [AdaptiveCards](http://adaptivecards.io/).
 
 ![Sample Screenshot](./screenshot.gif "Sample Screenshot")
 
+Online renderer and debugging tool can be found [here](https://microsoft.github.io/react-native-adaptivecards/)
+
 ## Getting Started
 
 ### Basic Usage
diff --git a/tool/src/components/App/App.css b/tool/src/components/App/App.css
index e1fcfb1..032b240 100644
--- a/tool/src/components/App/App.css
+++ b/tool/src/components/App/App.css
@@ -62,4 +62,5 @@
   }
   .Pane2 {
     background-color: white;
+    overflow: auto;
   }
\ No newline at end of file
diff --git a/tool/src/components/App/index.js b/tool/src/components/App/index.js
index a12ac14..e31405e 100644
--- a/tool/src/components/App/index.js
+++ b/tool/src/components/App/index.js
@@ -17,15 +17,14 @@ export default class App extends React.Component {
                 <div className="main-page">
                     <SampleList />
                     <div style={{display: 'flex', flex: 1}}>
-                        <SplitPane split="vertical" defaultSize="72%" style={{ position: 'relative' }}>
+                        <SplitPane split="vertical" defaultSize="72%" style={{ position: 'relative'}}>
                             <Editor />
-                            <SplitPane split="horizontal" defaultSize="60%">
+                            <SplitPane split="horizontal" defaultSize="60%"  >
                                 <CardList />
                                 <ErrorMessage />
                             </SplitPane>
                         </SplitPane>
                     </div>
-
                 </div>
             </div>
         );
diff --git a/tool/src/components/ErrorMessage/index.js b/tool/src/components/ErrorMessage/index.js
index 52a9fef..d030267 100644
--- a/tool/src/components/ErrorMessage/index.js
+++ b/tool/src/components/ErrorMessage/index.js
@@ -32,10 +32,10 @@ class ErrorMessage extends React.Component {
         }
 
         return (
-            <div>
+            <div className="error-list">
                 <Alert message={`Input data is ${result.isValid ? "valid" : "invalid"}`} type={result.isValid ? "success" : "error"} />
                 {
-                    result.messages.map(mes => <Alert message={mes.level + ' : ' + mes.message} type={mes.level.charAt(0).toLowerCase()+mes.level.slice(1)} />)
+                    result.messages.map(mes => <Alert message={mes.level + ' : ' + mes.message} type={mes.level.charAt(0).toLowerCase() + mes.level.slice(1)} />)
                 }
             </div>
         );
diff --git a/tool/yarn.lock b/tool/yarn.lock
index 1ab8d2a..721d8ca 100644
--- a/tool/yarn.lock
+++ b/tool/yarn.lock
@@ -1946,7 +1946,8 @@ boolbase@~1.0.0:
 
 bowser@^1.7.3:
   version "1.9.4"
-  resolved "http://registry.npm.taobao.org/bowser/download/bowser-1.9.4.tgz#890c58a2813a9d3243704334fa81b96a5c150c9a"
+  resolved "https://registry.yarnpkg.com/bowser/-/bowser-1.9.4.tgz#890c58a2813a9d3243704334fa81b96a5c150c9a"
+  integrity sha512-9IdMmj2KjigRq6oWhmwv1W36pDuA4STQZ8q6YO9um+x07xgYNCD3Oou+WP/3L1HNz7iqythGet3/p4wvc8AAwQ==
 
 bplist-creator@0.0.7:
   version "0.0.7"
@@ -2655,7 +2656,8 @@ date-now@^0.1.4:
 
 debounce@^1.1.0:
   version "1.2.0"
-  resolved "http://registry.npm.taobao.org/debounce/download/debounce-1.2.0.tgz#44a540abc0ea9943018dc0eaa95cce87f65cd131"
+  resolved "https://registry.yarnpkg.com/debounce/-/debounce-1.2.0.tgz#44a540abc0ea9943018dc0eaa95cce87f65cd131"
+  integrity sha512-mYtLl1xfZLi1m4RtQYlZgJUNQjl4ZxVnHzIR8nLLgi4q1YT8o/WM+MK/f8yfcc9s5Ir5zRaPZyZU6xs1Syoocg==
 
 debug@2.6.9, debug@^2.1.2, debug@^2.2.0, debug@^2.3.3, debug@^2.6.6, debug@^2.6.8, debug@^2.6.9:
   version "2.6.9"
@@ -2685,7 +2687,8 @@ decode-uri-component@^0.2.0:
 
 deep-assign@^2.0.0:
   version "2.0.0"
-  resolved "http://registry.npm.taobao.org/deep-assign/download/deep-assign-2.0.0.tgz#ebe06b1f07f08dae597620e3dd1622f371a1c572"
+  resolved "https://registry.yarnpkg.com/deep-assign/-/deep-assign-2.0.0.tgz#ebe06b1f07f08dae597620e3dd1622f371a1c572"
+  integrity sha1-6+BrHwfwja5ZdiDj3RYi83GhxXI=
   dependencies:
     is-obj "^1.0.0"
 
@@ -4092,7 +4095,8 @@ ini@~1.3.0:
 
 inline-style-prefixer@^4.0.0:
   version "4.0.2"
-  resolved "http://registry.npm.taobao.org/inline-style-prefixer/download/inline-style-prefixer-4.0.2.tgz#d390957d26f281255fe101da863158ac6eb60911"
+  resolved "https://registry.yarnpkg.com/inline-style-prefixer/-/inline-style-prefixer-4.0.2.tgz#d390957d26f281255fe101da863158ac6eb60911"
+  integrity sha512-N8nVhwfYga9MiV9jWlwfdj1UDIaZlBFu4cJSJkIr7tZX7sHpHhGR5su1qdpW+7KPL8ISTvCIkcaFi/JdBknvPg==
   dependencies:
     bowser "^1.7.3"
     css-in-js-utils "^2.0.0"
@@ -6669,7 +6673,8 @@ react-native-vector-icons@^5.0.0:
 
 react-native-web@0.6.0:
   version "0.6.0"
-  resolved "http://registry.npm.taobao.org/react-native-web/download/react-native-web-0.6.0.tgz#46c843ab83c569246dc43ba745033c1bb4d22930"
+  resolved "https://registry.yarnpkg.com/react-native-web/-/react-native-web-0.6.0.tgz#46c843ab83c569246dc43ba745033c1bb4d22930"
+  integrity sha512-MIE+/h8Niu+tbKbdkkXLWkyT+tK0ZmSE2by0WXDGTbJ1fdCAAkwM0JPfXE1OyMWH9OfB+u1Bbk8fABOITIYrmw==
   dependencies:
     array-find-index "^1.0.2"
     create-react-class "^15.6.2"