php - 如何使用引导行类为卡片创建 3 列

Question

我正在尝试使用 bootstrap 4 行类在三个不同的列中显示我的页面的内容(在卡片中显示)。我该怎么做？

我正在使用 Laravel 5.8 和 bootstrap 4。其他 bootstrap 功能(如轮播和导航栏)工作正常。

主 Blade 文件-views/layout/app.blade.php 中内容的代码如下所示；

<div class="container-fluid">
     @yield('content')                   
</div>

那么对于页面，我希望 layout-views/pages/secondpage.blade.php 是；

@extends('layout.app')

@section('content')

        <div class="col-12 text-center">
            <h2> Page caption</h2>
        </div>

<div class="row">

        <div class="col-sm-6 col-md-4">
            <div class="card border-white">
                <div class="card-header">Heading 1</div>
                    <div class="card-body">
                        <p class="card-text">Some quick example text to build 
                           on the card 
                        title and make up the bulk of the card's content.</p>
                    </div>
                </div>
            </div>
        </div>

        <div class="col-sm-6 col-md-4">
            <div class="card border-white">
                <div class="card-header">Heading 2</div>
                    <div class="card-body">
                        <p class="card-text">Some quick example text to build 
                          on the card 
                        title and make up the bulk of the card's content.</p>
                    </div>
                </div>
            </div>
        </div>

        <div class="col-sm-6 col-md-4">
            <div class="card border-white">
                <div class="card-header">Heading 3</div>
                    <div class="card-body">
                        <p class="card-text">Some quick example text to build 
                         on the card 
                        title and make up the bulk of the card's content.</p>
                    </div>
                </div>
            </div>
        </div>

</div>

@endsection

我希望看到卡片排列在三个不同的列中，但它们都在一个列中。

Answer 1

你有一个额外的 div 关闭标签，用于所有三个这就是为什么您将所有内容都集中在一栏中的原因

<div class="row">

        <div class="col-sm-6 col-md-4">
            <div class="card border-white">
                <div class="card-header">Heading 1</div>
                    <div class="card-body">
                        <p class="card-text">Some quick example text to build 
                           on the card 
                        title and make up the bulk of the card's content.</p>
                    </div>
                </div>
            <!--</div>-->
        </div>

        <div class="col-sm-6 col-md-4">
            <div class="card border-white">
                <div class="card-header">Heading 2</div>
                    <div class="card-body">
                        <p class="card-text">Some quick example text to build 
                          on the card 
                        title and make up the bulk of the card's content.</p>
                    </div>
                </div>
            </div>
            <!--</div>-->

        <div class="col-sm-6 col-md-4">
            <div class="card border-white">
                <div class="card-header">Heading 3</div>
                    <div class="card-body">
                        <p class="card-text">Some quick example text to build 
                         on the card 
                        title and make up the bulk of the card's content.</p>
                    </div>
                </div>
            </div>
            <!--</div>-->

</div>