Adaptive layout and programming of the online store

It is necessary to adaptively build and program the online store. CMS - Bitrix Small Business.

Requirements for layout: cross-browser, adaptability, validity (I will check in the w3c validator). You can use ready-made frameworks, such as bootstrap, materialize, etc.
So. I have already been abandoned by 2 people (no work, no prepayment return), then work only on the BS, or on the fact of execution (you can step by step - into which stages and amounts to break, we will agree). At least for the first time, as long as I have confidence in your decency. I will show you reviews about working with me and about honest payment on other freelancing exchanges so you can make sure that everything is OK on my part.
In addition, there will be another project for layout and programming (we will talk with the candidate).
You're the cost and the deadline.
Requirements:
- responsibility
- punctuality
- experience
The desire to cooperate (as there will be many projects)
- decency
- regular discussion of progress
If you are working in a team or with a partner, at least an initial communication with all participants is desirable.
- not to get sick, have a good computer, Internet, light and conscience:) in general, to work seriously, not to tell fairy tales.