Responsive

[isam007]

Responsive design tutorial is very slow. what can i do.Its taking too much while rendering.
Somebody help me to get rid of this out.

[8-bit-gaming]

I would recommend taking a look at the troubleshooting guides:

Connection Lost in Codecademy's Learning Environment

^ The above refers to losing connection, but given this is a similar error it may prove useful.

Troubleshooting Guide

There are a number of things you can try if you are having trouble loading, viewing, or submitting exercises. Reload the web page This takes care of a majority of problems. Check your Internet connection. We recommend that you have a reasonably fast connection to the internet. Any broadband connection, like DSL or cable, should be sufficient. If you are at work or school or using a shared wireless network, there may be a firewall or proxy that is interfering with your connection to Codecademy…