css min issue

css min issue

 cssmin:
  { dist: { files: { '<%= yeoman.dist %>/styles/main.css': [ '.tmp/styles/{,*/}*.css', 'source/styles/{,*/}*.css' ] } },
  generated:
   { files:
      [ { dest: 'www\\styles\\css\\main.css',
          src: [ '.tmp\\concat\\styles\\css\\main.css' ] } ] } }

Running "concat:generated" (concat) task
Verifying property concat.generated exists in config...OK
Files: source/styles/css/reset.css, source/styles/css/index.css, source/styles/css/centure.css, source/styles/css/layout.css, source/styles/css/wizard.css, source/styles/css/hagderMenu.css, source/styles/css/header.css, source/styles/css/box.css, source/styles/css/footer.css, source/styles/css/overlay.css, source/bower_components/backgrid/lib/backgrid.css, source/bower_components/backgrid-paginator/backgrid-paginator.css, source/bower_components/backgrid-filter/backgrid-filter.css, source/styles/css/about.css, source/styles/css/grid.css, source/styles/css/photos.css, source/styles/css/editor.css, source/styles/css/colors.css -> .tmp\concat\styles\css\main.css
Files: source/bower_components/modernizr/modernizr.js -> .tmp\concat\scripts\vendor\modernizr.js
Files: source/bower_components/requirejs/require.js -> .tmp\concat\plugins.js
Options: separator="\r\n", banner="", footer="", stripBanners=false, process=false, sourceMap=false, sourceMapName=undefined, sourceMapStyle="embed"
Reading source/styles/css/reset.css...OK
Reading source/styles/css/index.css...OK
Reading source/styles/css/centure.css...OK
Reading source/styles/css/layout.css...OK
Reading source/styles/css/wizard.css...OK
Reading source/styles/css/hagderMenu.css...OK
Reading source/styles/css/header.css...OK
Reading source/styles/css/box.css...OK
Reading source/styles/css/footer.css...OK
Reading source/styles/css/overlay.css...OK
Reading source/bower_components/backgrid/lib/backgrid.css...OK
Reading source/bower_components/backgrid-paginator/backgrid-paginator.css...OK
Reading source/bower_components/backgrid-filter/backgrid-filter.css...OK
Reading source/styles/css/about.css...OK
Reading source/styles/css/grid.css...OK
Reading source/styles/css/photos.css...OK
Reading source/styles/css/editor.css...OK
Reading source/styles/css/colors.css...OK
Writing .tmp\concat\styles\css\main.css...OK
File .tmp\concat\styles\css\main.css created.
Reading source/bower_components/modernizr/modernizr.js...OK
Writing .tmp\concat\scripts\vendor\modernizr.js...OK
File .tmp\concat\scripts\vendor\modernizr.js created.
Reading source/bower_components/requirejs/require.js...OK
Writing .tmp\concat\plugins.js...OK
File .tmp\concat\plugins.js created.

Running "cssmin:generated" (cssmin) task
Verifying property cssmin.generated exists in config...OK
Files: .tmp/concat/styles/css/main.css -> www\styles\css\main.css
Options: rebase=false, report="min", sourceMap=false
>> Unexpected content: '
>> }'. Ignoring.,Unexpected content: '
>> }'. Ignoring.
Reading .tmp/concat/styles/css/main.css...OK
Writing www\styles\css\main.css...OK
File www\styles\css\main.css created 58.18 kB → 35.4 kB
>> 1 file created. 58.18 kB → 35.4 kB

Running "concurrent:dist" (concurrent) task