当我跑步grunt build --verbose时，它告诉我>> Destination not written because minified CSS was empty.。我也注意到这是说Files: [no src] -> dist/styles/main.css，所以如果没有来源[no src]，那么没有任何东西是有道理的。至少这是我现在的想法。结果是没有生成main.css 。
为什么会这样？
Running "cssmin:generated" (cssmin) task
Verifying property cssmin.generated exists in config...OK
Files: bower_components/foundation/css/foundation.css, bower_components/normalize.css/normalize.css -> dist/styles/vendor.css
Files: [no src] -> dist/styles/main.css
Options: report="min"
Reading bower_components/foundation/css/foundation.css...OK
Reading bower_components/normalize.css/normalize.css...OK
Writing dist/styles/vendor.css...OK
File dist/styles/vendor.css created: 194.3 kB → 138.61 kB
>> Destination not written because minified CSS was empty.
这是一个包含我的Gruntfile.js的要点：
https://gist.github.com/3lfist/86f1cc3076e01ef5a905
这是我的index.html，其中包含 usemin 块