To speed up page loading

[chenzhuofu]

First thanks for your sharing of this repo! I developed own page based on this repo, however just found that main page loading is toooo slow :( Do you experience the same issue?

I found the main issue is remote bootstrap file loading, and one way to speedup is replacing the bootstrap.css/js with local storage. In two steps:

• Download a compiled bootstrap files: https://getbootstrap.com/docs/4.0/getting-started/download/,
• Replace all href referred to remote link.

You can check this commit.