<div class="row"> <div class="col-md-4"> <div class="dot"> <img class="img-fluid" src="images/page1_ico1.png" /> </div> </div> </div>
我尝试了img-fluid和容器液。
<style>
.dot {
text-align: center;
}
</style>
使用文本对齐将内容放在div中居中
<img src="..." alt="..." class="img-responsive center-block" />
<img src="..." class="mx-auto d-block" alt="...">
来源:https://getbootstrap.com/docs/4.4/content/images/#aligning-images
<style>
.dot {
margin-left: auto;
margin-right: auto;
}
</style>
<img src="..." alt="..." class="img-responsive center-block" />
<img src="..." class="mx-auto d-block" alt="...">