在小屏幕上找不到合适的尺寸

Question

我在我的应用程序中使用bootstrap4和Stream UI Kit作为用户界面，但是我在小屏幕上没有获得正确的列大小!！

示例！

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当我们在手机上浏览时，应该是每行一条!！使用col md-4可以检查demo

<!-- Campaigns Grid -->
    <section class="pt-11 pb-6 bg-light">
        <div class="container">


            <div class="d-flex justify-content-between align-items-center mb-5">
                <h2 class="h3 text-center">{{ trans('user.offers') }}</h2>
                <a href="{{ url('/campaigns?type=offer') }}" class="btn btn-outline-primary">{{ trans('user.all') }}</a>
            </div>

            <div class="row">
                @foreach($offers as $demand)
                    <div class="col-md-4 mb-5">

                        <div class="card h-100 border-0 shadow">
                            <a href="{{ url('/campaign/'.$demand->id) }}" class="d-block bg-gradient rounded-top">
                                <img class="card-img-top hover-fade-out" src="{{ url('upload/campaign/'. $demand->cover .'/') }}" alt="{{ $demand->title }}"  height="244">
                            </a>
                            <div class="card-body">
                                <a href="{{ url('/campaign/'.$demand->id) }}">
                                    <h3>{{ $demand->title }}</h3>
                                </a>
                                <p>
                                    {!! str_limit(strip_tags($demand->content), 128) !!}
                                </p>
                            </div>
                            <div class="card-footer d-flex">
                                @foreach($demand->categories as $category)
                                    @if(App::isLocale('ar')) <a href="{{ url('/category/'.$category->id) }} " class="badge badge-pill badge-secondary mr-1" >{{ $category->title_ar }} </a>
                                    @elseif(App::isLocale('fr')) <a href="{{ url('/category/'.$category->id) }}" class="badge badge-pill badge-secondary mr-1">{{ $category->title }}</a>
                                    @else <a href="{{ url('/category/'.$category->id) }}"  class="badge badge-pill badge-secondary mr-1">{{ $category->title_en }}</a>
                                    @endif
                                @endforeach
                            </div>
                        </div>
                    </div>
                @endforeach


            </div>
        </div>
    </section>
    <!-- End Campaigns Grid -->

Answer 1

您可以使用，col-md-4以及设备的所有类。在一行中使用这个

Class=“col-6 col-md-4 col-sm-4 col-lg-4 col-xl-4”

这些类本身在所有设备上都提供响应。col - set移动col-md - set中型设备col-sm - small col-lg - large col-xl -特大型

它们将自动管理。