感谢 darcyc 大佬的指导！

限制最大不超过：
<img src="图片网址" style='max-height:300px'>

限制最小不得小于：
<img src="图片网址" style='min-height:300px'>

效果展示：

2021-09-11

2021-11-27

2021-11-16

2021-11-16

<div class="shadow-lg p-3 mb-5 bg-body rounded container">

<!-------------1111111---------------->
<div class="card-group">

<div class="card">
<img src="https://files.getquicker.net/_sitefiles/_guides/52593d69-c99a-4367-8b98-08d9a65be47e/2021/11/16/233043_202824_c%20%282%29.png" class="card-img-top"  style="max-height:330px">
<div class="card-body">
</div>
<div class="card-footer">
<small class="text-muted">2021-09-11</small>
</div>
</div>

<div class="card">
<img src="https://files.getquicker.net/_sitefiles/_guides/52593d69-c99a-4367-8b98-08d9a65be47e/2021/12/11/200955_202824_0.png" class="card-img-top" style="max-height:330px">
<div class="card-body">
</div>
<div class="card-footer">
<small class="text-muted">2021-11-27</small>
</div>
</div>

<div class="card">
<img src="https://files.getquicker.net/_sitefiles/_guides/52593d69-c99a-4367-8b98-08d9a65be47e/2021/11/18/151303_202824_1.png" class="card-img-top" style="max-height:330px">
<div class="card-body">
</div>
<div class="card-footer">
<small class="text-muted">2021-11-16</small>
</div>
</div>

<div class="card">
<img src="https://files.getquicker.net/_sitefiles/_guides/52593d69-c99a-4367-8b98-08d9a65be47e/2021/11/18/151303_202824_1.png" class="card-img-top" style="max-height:330px">
<div class="card-body">

</div>
<div class="card-footer">
<small class="text-muted">2021-11-16</small>
</div>
</div>


</div>
<!-------------1111111---------------->


</div>