Я использую Bootstrap в своем приложении Angular, и все остальные стили работают так, как должны, но стиль флажка - нет. Он просто выглядит как простой старый флажок.
<link rel="stylesheet" href="#" onclick="location.href='https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css'; return false;" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<div class="container">
<form class="form-signin">
<h2 class="form-signin-heading">Please log in</h2>
<label for="inputEmail" class="sr-only">User name</label>
<input [(ngModel)]="loginUser.Username" type="username" name="username" id="inputEmail" class="form-control" placeholder="User name" required autofocus>
<label for="inputPassword" class="sr-only">Password</label>
<input [(ngModel)]="loginUser.Password" type="password" name="password" id="inputPassword" class="form-control" placeholder="Password" required>
<a *ngIf="register == false" (click)="registerState()">Register</a>
<div class="checkbox">
<label>
<input type="checkbox" [(ngModel)]="rememberMe" name="rememberme"> Remember me
</label>
</div>
<button *ngIf="register == false" (click)="login()" class="btn btn-lg btn-primary btn-block" type="submit">Log in</button>
</form>
</div>