diff --git a/css/style.css b/css/style.css
deleted file mode 100644
index 59d25df..0000000
--- a/css/style.css
+++ /dev/null
@@ -1,4 +0,0 @@
-textarea {
-    width: 100%;
-    height: 80%;
-}
diff --git a/index.html b/index.html
index 36c5f70..db5f7f8 100644
--- a/index.html
+++ b/index.html
@@ -9,6 +9,12 @@
     <link rel="stylesheet" href="css/style.css">
     <link rel="stylesheet" href="css/codemirror.css">
     <link rel="stylesheet" href="css/bootstrap.min.css">
+    <style>
+        .CodeMirror {
+          border: 1px solid #eee;
+          height: auto;
+        }
+    </style>
   </head>
   <body>
     <div class="container">
diff --git a/js/app.js b/js/app.js
index 48d0649..d40b61d 100644
--- a/js/app.js
+++ b/js/app.js
@@ -21,6 +21,7 @@ $("#btn_validate").click( function () {
 var editor = CodeMirror.fromTextArea(document.getElementById("ta_turtle"), {
     lineNumbers: true,
     mode: 'turtle',
+    viewportMargin: Infinity,
     theme: 'default'
 });
 
