Some of the styles introduced by Angular4 into bootstrap do not take effect.

the current situation is that the grid is in effect, the background bar is not valid, and so on. What"s the problem?
this is not another unanswered question, is it

Target style:

:

1.app.component.html 

<app-navbar></app-navbar>

<div class="container">
  <div class="row">
    <div class="col-md-3">
      <app-search></app-search>
    </div>
    <div class="col-md-9">
      <div class="row">
        <app-carousel></app-carousel>
      </div>
      <div class="row">
        <app-product></app-product>
      </div>
    </div>
  </div>
</div>

<app-footer></app-footer>

2.navbar.component.html 

<nav class="navbar navbar-inverse navbar-fixed-top">
  <div class="container">
    <div class="navbar-header">
      <a class="navbar-brand" href="-sharp"></a>
    </div>
  </div>
</nav>

3.angular-cli.json 

      "styles": [
        "styles.css",
        "../node_modules/bootstrap/dist/css/bootstrap.css"
      ],
      "scripts": ["../node_modules/jquery/dist/jquery.js",
                  "../node_modules/bootstrap/dist/js/bootstrap.js"
                ],

4.packge.json 


    "bootstrap": "^4.0.0",
    "jquery": "^3.3.1",
Angular4
Mar.01,2021

Don't look at bootstrap4 Chinese website, the above is inconsistent with the latest bootstrap, so you may have written outdated code (your library should be up to date)
to see the original bootstrap official website

Previous: React declaration component

Next: Php curl is written in the same function, but it is requested at the same time.

css mysql arrays josn react html typescript webpack npm sass R objective-c .net sql-server jquery python-3.x angularjs django angular excel regex iphone ajax linux xml pandas vba spring database wordpress string wpf xcode windows bash postgresql oracle multithreading eclipse list firebase algorithm macos forms image scala visual-studio azure bootstrap spring-boot react-native python-2.7 docker performance function winforms matlab powershell apache dataframe api sqlite numpy rest shell selenium flutter dart maven loops qt swing android-studio csv express file class tensorflow sorting codeigniter perl
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1c276ec-33870.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1c276ec-33870.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?