[Soft Reject] shopify theme soft rejected

Hello Community,
I had a soft reject for my shopify theme. Here is the some comments of envato reviewer. Fixed other issues but i need help for following issues:

  1. The typographic hierarchy of this item requires additional work. For more information, please read: http://webdesign.tutsplus.com/articles/understanding-typographic-hierarchy–webdesign-11636

  2. The design needs improvements in color usage. Although you may feel this is a subjective topic, it is quite objective and relevant to core design principals and will affect the file’s overall appeal. The use of one color across so many elements creates a somewhat “flat” appearance and reduces overall visual hierarchy.

  3. There are spacing and alignment issues in this item. Please make sure that all elements are aligned properly and spacing is consistent from section to section. Here are some articles with more information regarding negative space and proper spacing: http://webdesign.tutsplus.com/articles/using-white-space-or-negative-space-in-your-designs–webdesign-3401, http://webdesign.tutsplus.com/articles/adding-space-to-your-designs–webdesign-14836

  4. Unfortunately, we were unable to approve your submission because your files were inaccurately represented as responsive and fails to implement the feature up to ThemeForest’s standards. Please take a moment to make sure that your design implements the feature well for mobile devices as well.

Can any one let me know what should i do to get approved any reference links where i can learn more ? any thing ?

Here is the demo link: https://occasion-demo.myshopify.com/

Thank you so much !!

Any body !!
Please can you advise me ? I would really appreciate it.