角度材质按钮未呈现

Question

我已按照步骤安装材料设计，但是当我添加按钮时，我没有得到 MD 样式。

<button mat-button [matMenuTriggerFor]="menu">Menu</button>
    <mat-menu #menu="matMenu">
      <button mat-menu-item>Item 1</button>
      <button mat-menu-item>Item 2</button>
</mat-menu>

Package.json 文件

{
  "name": "apimap",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^5.0.2",
    "@angular/cdk": "github:angular/cdk-builds",
    "@angular/common": "^5.0.0",
    "@angular/compiler": "^5.0.0",
    "@angular/core": "^5.0.0",
    "@angular/forms": "^5.0.0",
    "@angular/http": "^5.0.0",
    "@angular/material": "github:angular/material2-builds",
    "@angular/platform-browser": "^5.0.0",
    "@angular/platform-browser-dynamic": "^5.0.0",
    "@angular/router": "^5.0.0",
    "core-js": "^2.4.1",
    "hammerjs": "^2.0.8",
    "rxjs": "^5.5.2",
    "zone.js": "^0.8.14"
  },
  "devDependencies": {
    "@angular/cli": "1.5.2",
    "@angular/compiler-cli": "^5.0.0",
    "@angular/language-service": "^5.0.0",
    "@types/jasmine": "~2.5.53",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "~6.0.60",
    "codelyzer": "~3.2.0",
    "jasmine-core": "~2.6.2",
    "jasmine-spec-reporter": "~4.1.0",
    "karma": "~1.7.0",
    "karma-chrome-launcher": "~2.1.1",
    "karma-cli": "~1.0.1",
    "karma-coverage-istanbul-reporter": "^1.2.1",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.1.2",
    "ts-node": "~3.2.0",
    "tslint": "~5.7.0",
    "typescript": "~2.4.2"
  }
}

我还在 index.html 中添加了 css 主题 + 材质设计 在 app.mudule.ts 中添加了 MD 模块，但我得到了一个基本的 html 按钮样式，只有 mat-menu-item 是 MD 样式。

更新：按钮的屏幕截图：

当我点击它时

Answer 1

为了确认，您是否在 appModule 导入中添加了 MatButtonModule？由于我的声誉，无法将其添加为评论：P