我正在使用默认的yeoman角度生成器和gruntfile.js。我正在运行grunt构建，我的css文件都没有被复制到dist文件夹。这是我如何配置
<head>
<meta charset="utf-8">
<title></title>
<meta name="description" content="">
<meta name="viewport" content="width=device-width">
<!-- Place favicon.ico and apple-touch-icon.png in the root directory -->
<!-- build:css(.) styles/vendor.css -->
<!-- bower:css -->
<link rel="stylesheet" href="bower_components/bootstrap/dist/css/bootstrap.css" />
<!-- endbower -->
<!-- endbuild -->
<!-- build:css(.tmp) styles/main.css -->
<link rel="stylesheet" href="styles/main.css" />
<link rel="stylesheet" href="styles/stylish-portfolio.css" />
<link rel="stylesheet" href="styles/css/animations.css" />
<link rel="stylesheet" href="styles/brettfont.css" />
<link rel="stylesheet" href="styles/brettfont2.css" />
<link rel="stylesheet" href="styles/brettfont3.css" >
<link rel="stylesheet" href="styles/font-awesome-4.1.0/css/font-awesome.min.css" />
<link rel="stylesheet" href="styles/font-mfizz-1.2/font-mfizz.css" />
<!-- endbuild -->
</head>