Fix text area border

Author: SamuelTallet

static/css/mpg.css

@@ -4,12 +4,21 @@ code {
 
 }
 
+button, input {
+
+    border: 1px solid #ddd;
+
+}
+
 .CodeMirror {
 
     width: 100%;
     height: auto;
     min-height: 60px;
 
+    margin-bottom: 20px;
+    border: 1px solid #ddd;
+
     font-family: Consolas, monospace;
 
 }