[Hard Reject] How to improve my theme, Please Help

Hi, I submitted my theme and get hard reject.

DEMO: http://goo.gl/D0uug7

Unfortunately your submission Minimal isn’t ready for ThemeForest and cannot be resubmitted as it did not meet our minimum requirements for quality and/or Envato Market policies. In order for submissions to be considered for sale they must be of high aesthetic and technical quality, unique to our library and cannot be in violation of Envato’s policies.

Regrettably the Help and Quality Teams are unable to offer a critique or feedback on your rejected submission

Can you help me to make improvements and show errors in my theme.