[Mobile] Set viewport

Viewport has been set in
index.html. Then what was
implemented prior to this
(rem-display and browser-manage)
was commented out.

platform/commonUI/general/res/sass/user-environ/_layout.scss

@@ -43,13 +43,33 @@
 	position: absolute;
 }
 
+
 .editor {
 	@include border-radius($basicCr * 1.5);
 }
 
+$min-name: min-device-width;
+$max-name: max-device-width;
+$max-small: 769px;
+$min-large: 770px;
+
 // style="min-width: 150px; max-width: 800px; width: 25%;"
 .browser-manage {
-    width: 100%;
+//    @media only screen and ($max-name : $max-small) {
+//        width: 100%;
+//    }
+//    
+//    @media only screen and ($min-name : $min-large) {
+        min-width: 150px;
+        max-width: 800px;
+        width: 25%;
+//    }
+}
+
+.rem-display {
+//    @media only screen and ($max-name : $max-small) {
+//        display: none;
+//    }
 }
 
 .contents {