bootstrap 圖片居中 img-responsive center-block

來源網址: http://www.devdo.net/bootstrap3-img-align-center.html

<img src="圖片地址" class="img-responsive center-block" />

Http Status Code

[Rails Error] rubygems/core_ext/kernel_require.rb in `require': cannot load such file -- bundler/setup (LoadError)

在自己的環境下執行 bundle exec rails c 時,
出現下列錯誤:

rubygems/core_ext/kernel_require.rb:55:in `require': cannot load such file -- bundler/setup (LoadError)

後來找了一下google 才找到解法:
bundle install --binstubs

詳細解說: