下面是我的

profileContainer.innerHTML = 
`
<div class="col-md-12">
    <section class="jumbotron my-5">

        <h3 class="text-center">First Name: ${data.firstName}</h3>
        <h3 class="text-center">Last Name: ${data.lastName}</h3>
        <h3 class="text-center">Email: ${data.email}</h3>
        <h3 class="text-center">Contact Number: ${data.mobileNo}</h3>
        <h3 class="mt-5">Class History</h3>
        <table class="table">
            <thead>
                <tr>
                    <th> Course Name </th>
                    <th> Enrolled On </th>
                    <th> Status </th>
                </tr>
            </thead>
            <tbody id="coursesContainer"></tbody>
            </table> 
        </section>
    </div>
`

这是我的

<main class="container my-5">
    <div id="profileContainer" class="row">
        <div class="col-md-12">
            <section class="jumbotron text-center my-5">        
                <h2 class="my-5"><span class="spinner-border text-primary"></span> Fetching User 
               Details...</h2>
            </section>
        </div>
    </div>
    <!-- end row -->
</main>

这是预期的输出:profile

我尝试将配置文件的背景色从灰色更改为其他颜色，但是通过将定位只会更改外部边框的颜色…请帮帮忙