即使自动应用边距，图像也不居中

Question

正在尝试使用 CSS 将图片移到页面中央。我将这些值应用于图像，但没有成功。请参阅下面的代码：

HTML:

<div class="list_of_reviews">
<ul style="list-style-type:none">
<li>What will happen to Brittish travelers when Brexit finaly happens</li>
</ul>
</div>
<img class="image_1" src="for left column.jpg" alt="What will happen to Brittish travelers when Brexit finaly happens"/>

CSS:

.list_of_reviews {
    margin:80px auto;
    font-family: "Times New Roman", Times, Serif;
    line-height: 1.5;
    font-size: 30px;
    width: 40%;     
    border:solid;
}


.image_1 {
    margin:auto;
    height:200px;
    width:350px;
    position:relative;
}

非常感谢直截了当的回答，请不要降级。

Answer 1

要使 margin: 0 auto 正常工作，您需要添加 display: block。

.list_of_reviews {
  margin: 80px auto;
  font-family: "Times New Roman", Times, Serif;
  line-height: 1.5;
  font-size: 30px;
  width: 40%;
  border: solid;
}
.image_1 {
  display: block;
  margin: auto;
  height: 200px;
  width: 350px;
  position: relative;
}

<div class="list_of_reviews">
  <ul style="list-style-type:none">
    <li>What will happen to Brittish travelers when Brexit finaly happens</li>
  </ul>
</div>
<img class="image_1" src="http://placehold.it/350x200" alt="What will happen to Brittish travelers when Brexit finaly happens" />

编辑：

其实...

Don't change the default behavior of an element if you can avoid it. Keep elements in the natural document flow as much as you can.

由于默认情况下图像的行为类似于文本，因此最好这样做：

.list_of_reviews {
  margin: 80px auto;
  font-family: "Times New Roman", Times, Serif;
  line-height: 1.5;
  font-size: 30px;
  width: 40%;
  border: solid;
}
figure {
  text-align: center;
}
.image_1 {
  height: 200px;
  width: 350px;
  position: relative;
}

<div class="list_of_reviews">
  <ul style="list-style-type:none">
    <li>What will happen to Brittish travelers when Brexit finaly happens</li>
  </ul>
</div>
<figure>
  <img class="image_1" src="for left column.jpg" alt="What will happen to Brittish travelers when Brexit finaly happens" />
</figure>

Answer 2

默认情况下 <img> 设置为 display: inline;（尽管它们在技术上具有某些 display: inline-block; 属性 - .

您可以很容易地将其覆盖为 display: block;，您所需的布局将起作用：https://jsfiddle.net/er13qobj/

Answer 3

相反，我会推荐这种方式，虽然它看起来很傻，但仍然有效，

<div class="list_of_reviews">
<ul style="list-style-type:none">
<li>What will happen to Brittish travelers when Brexit finaly happens</li>
</ul>
</div>
<center>
<img src="for left column.jpg" alt="What will happen to Brittish travelers when Brexit finaly happens"/>
</center>

即使自动应用边距，图像也不居中

Image is not centered even margin auto applied

html

css

margin

margins