自定义样式Bootstrap 4

Question

我稍微定制了Bootstrap样式。基本上，它只是＆＃34;蓝色＆＃34;变量。这是一些图片。首先，导航栏的定义如下：

class="navbar navbar-inverse bg-primary navbar-fixed-top navbar-toggleable-md"

这张照片显示了它的背景。

我也在使用Bootstrap 4 Accordion。这是它的代码：

<div id="accordion" role="tablist" aria-multiselectable="true">
            <div class="card">
                <div class="card-header" role="tab" id="headingOne">
                    <h5 class="mb-0">
                        <a data-toggle="collapse" data-parent="#accordion" href="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
                            Collapsible Group Item #1
                        </a>
                    </h5>
                </div>

                <div id="collapseOne" class="collapse show" role="tabpanel" aria-labelledby="headingOne">
                    <div class="card-block">
                        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
                    </div>
                </div>
            </div>
            <div class="card">
                <div class="card-header" role="tab" id="headingTwo">
                    <h5 class="mb-0">
                        <a class="collapsed" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
                            Collapsible Group Item #2
                        </a>
                    </h5>
                </div>
                <div id="collapseTwo" class="collapse" role="tabpanel" aria-labelledby="headingTwo">
                    <div class="card-block">
                        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
                    </div>
                </div>
            </div>
            <div class="card">
                <div class="card-header" role="tab" id="headingThree">
                    <h5 class="mb-0">
                        <a class="collapsed" data-toggle="collapse" data-parent="#accordion" href="#collapseThree" aria-expanded="false" aria-controls="collapseThree">
                            Collapsible Group Item #3
                        </a>
                    </h5>
                </div>
                <div id="collapseThree" class="collapse" role="tabpanel" aria-labelledby="headingThree">
                    <div class="card-block">
                        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
                    </div>
                </div>
            </div>
        </div>

直接来自文档。

在我的应用中看起来像这样：

手风琴标题不应与导航栏的原色相匹配吗？

由于