我想做出响应张牌使用引导4张固定宽度的卡.在这里,我发布了下面的代码,但它没有响应为什么?
<div class="card-deck">
<div class="card col-lg-2 col-md-3 col-sm-4 col-6" style="max-width: 12rem;">
<div class="card-body">
<h4 class="card-title">Title 1</h4>
<p>Small text here</p>
<small class="text-muted">3 mins ago</small>
</div>
</div>
<div class="card col-lg-2 col-md-3 col-sm-4 col-6" style="max-width: 12rem;">
<div class="card-body">
<h4 class="card-title">Title 2</h4>
<p>Small text here</p>
<small class="text-muted">3 mins ago</small>
</div>
</div>
<div class="card col-lg-2 col-md-3 col-sm-4 col-6" style="max-width: 12rem;">
<div class="card-body">
<h4 class="card-title">Title 3</h4>
<p>Small text here</p>
<small class="text-muted">3 mins ago</small>
</div>
</div>
<div class="card col-lg-2 col-md-3 col-sm-4 col-6" style="max-width: …Run Code Online (Sandbox Code Playgroud)