anchor.diff:      [styles.css](https://github.com/angular/angular.io/blob/master/public/docs/_examples/styles.css)
   
   .l-main-section#build-and-run
  -h2#build-and-run Step !{step++}: Build and run the app!
  -h2#build-and-run 步骤!{step++}：构建并运行本应用！
  +h2 Step !{step++}: Build and run the app!
  +h2 步骤!{step++}：构建并运行本应用！
   block run-app
     :marked
       Open a terminal window and enter this command:
  
positive.code:   code-example(format="nocode").
      点击右侧的图标，来把代码片段拷贝到剪贴板 ==>
  
  .l-main-section
  h2#create-and-configure Step 1: Create and configure the project
  h2#create-and-configure 步骤1：创建并配置项目
  
  - var _package_and_config_files = _docsFor == 'dart' ? 'pubspec.yaml' : 'package definition and configuration files'
  - var _package_and_config_filesCn = _docsFor == 'dart' ? 'pubspec.yaml' : '包定义与配置文件'
  
  .l-main-section#create-and-configure
  :marked
    ## Step 1: Create and configure the project
  
    In this step we:
  
    在这一步，我们将：
  
negative.code:     >模板中只有一行HTML：“*My First Angular App*”。
  
      >A more advanced template could contain data bindings to component properties
      and might identify other application components which have their own templates.
      These templates might identify yet other components.
      In this way an Angular application becomes a tree of components.
  
  