css - Customize Bootstrap checkboxes

Question

I'm using Bootstrap in my Angular application and all other styles are working like they should, but checkbox style doesn't. It just look like plain old checkbox.

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" 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>

Answer 1

Since Bootstrap 3 doesn't have a style for checkboxes I found a custom made that goes really well with Bootstrap style.

Checkboxes

.checkbox label:after {
  content: '';
  display: table;
  clear: both;
}

.checkbox .cr {
  position: relative;
  display: inline-block;
  border: 1px solid #a9a9a9;
  border-radius: .25em;
  width: 1.3em;
  height: 1.3em;
  float: left;
  margin-right: .5em;
}

.checkbox .cr .cr-icon {
  position: absolute;
  font-size: .8em;
  line-height: 0;
  top: 50%;
  left: 15%;
}

.checkbox label input[type="checkbox"] {
  display: none;
}

.checkbox label input[type="checkbox"]+.cr>.cr-icon {
  opacity: 0;
}

.checkbox label input[type="checkbox"]:checked+.cr>.cr-icon {
  opacity: 1;
}

.checkbox label input[type="checkbox"]:disabled+.cr {
  opacity: .5;
}

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">

<!-- Default checkbox -->
<div class="checkbox">
  <label>
   <input type="checkbox" value="">
   <span class="cr"><i class="cr-icon glyphicon glyphicon-ok"></i></span>
   Option one
   </label>
</div>

<!-- Checked checkbox -->
<div class="checkbox">
  <label>
   <input type="checkbox" value="" checked>
   <span class="cr"><i class="cr-icon glyphicon glyphicon-ok"></i></span>
   Option two is checked by default
   </label>
</div>

<!-- Disabled checkbox -->
<div class="checkbox disabled">
  <label>
   <input type="checkbox" value="" disabled>
   <span class="cr"><i class="cr-icon glyphicon glyphicon-ok"></i></span>
   Option three is disabled
   </label>
</div>