Before uploading the file to server, you can enable webview on your desktop by following below navigation
View>Turn on/off Web view
This will give you a view how it will look on an Ajax View. Also, you should do another step before the uploading the file on to server
after selecting the design grid option, click on the objects which is having scroll bars/not aligned. You can see a box around the object, adjust the box around the object correctly.
This should resolve 90% of your issues.
Thanks and Regards,