You can test the Website Design on all reports and then help with media queries. Pre-design analytics is also good for this strategy, but your website serves all the proposals, so you ensure that your mobile visitors will see your proposal in a creative way. The ideal way to start a responsible website design is to catch and test all view outs to do this with a high-resolution device.
If your goal is an exceptional website for smartphones and tablets, low-resolution and high-resolution, then the responsible web design is by far the lighter and most reliable technology you can do with. However, if you are planning to present web applications associated with the known target markets and channels on the web, you can also go for convenient technology.