在 Bootstrap 网格中垂直和水平居中图像

Question

我无法弄清楚如何使图像垂直和水平居中。基本上我有两行图像，宽度均为 150，但高度各不相同。

CSS

.image-center {
  display: inline-block;
  vertical-align: middle;
  position: relative;
}

HTML

<div class="row">
        <div class="col">
            <img class="center-block image-center" width="150" src="imagery/1.png"/>
        </div>
        <div class="col">
            <img class="center-block image-center" width="150" src="imagery/2.png"/>
        </div>            <div class="col">
            <img class="center-block image-center" width="150" src="imagery/3.png"/>
        </div>            <div class="col">
            <img class="center-block image-center" width="150" src="imagery/4.png"/>
        </div>
    </div>

    <div class="row">
        <div class="col">
            <img class="center-block" width="150" src="imagery/5.png"/>
        </div>            <div class="col">
            <img class="center-block" width="150" src="imagery/6.png"/>
        </div>            <div class="col">
            <img class="center-block" width="150" src="imagery/7.png"/>
        </div>            <div class="col">
            <img class="center-block" width="150" src="imagery/8.png"/>
        </div>
    </div>

Answer 1

如果你使用 Bootstrap 4（看起来你是），你可以使用 flex alignment 类比如 align-items-center justify -内容中心

 <div class="col d-flex align-items-center justify-content-center">

更多信息：https://getbootstrap.com/docs/4.1/layout/grid/#alignment

Answer 2

完成此操作的最佳方法是使用 flexbox 恕我直言。

HTML:

<div class="group">
  <img src="https://fakeimg.pl/150x100/?text=Hello" />
  <img src="https://fakeimg.pl/150x110/?text=Hello" />
  <img src="https://fakeimg.pl/150x120/?text=Hello" />
  <img src="https://fakeimg.pl/150x80/?text=Hello" />
  <img src="https://fakeimg.pl/150x70/?text=Hello" />
  <img src="https://fakeimg.pl/150x100/?text=Hello" />
  <img src="https://fakeimg.pl/150x115/?text=Hello" />
  <img src="https://fakeimg.pl/150x90/?text=Hello" />
  <img src="https://fakeimg.pl/150x100/?text=Hello" />
  <img src="https://fakeimg.pl/150x120/?text=Hello" />
</div>

CSS:

DIV.group {
 display:flex;
 flex-flow:row wrap;
 justify-content:space-between;
 align-items:center;
 align-content:stretch;
}

Answer 3

不知道 bootstrap 但如果你使用普通 CSS 将此 class 应用于子容器

position: absolute,
margin: auto,
top: 0,
right: 0,
bottom: 0,
left: 0,

Answer 4

我会推荐你使用 display:flex，你只需要创建一个水平 class 和一个垂直 class，然后根据你想给它的方向。

很简单，我给你写了代码片段，你只需要更改页边距，我也更改了图片。

div.horizontal {
    display: flex;
    justify-content: center;
    margin-bottom: 15px;
}

div.vertical {
    display: flex;
    flex-direction: column;
    justify-content: center;
    margin-right: 15px;
}

<div class="row horizontal">
        <div class="col vertical">
            <img class="center-block image-center" width="150" src="https://www.alliedmetrics.com/images/black-viton-seals.png"/>
        </div>

        <div class="col vertical">
            <img class="center-block image-center" width="150" src="https://www.alliedmetrics.com/images/black-viton-seals.png"/>
        </div>            <div class="col vertical">
            <img class="center-block image-center" width="150" src="https://www.alliedmetrics.com/images/black-viton-seals.png"/>
        </div>            <div class="col vertical">
            <img class="center-block image-center" width="150" src="https://www.alliedmetrics.com/images/black-viton-seals.png"/>
        </div>
    </div>

    <div class="row horizontal">
        <div class="col vertical">
            <img class="center-block" width="150" src="imagery/5.png"/>
        </div>            <div class="col vertical">
            <img class="center-block " width="150" src="imagery/6.png"/>
        </div>            <div class="col vertical">
            <img class="center-block" width="150" src="imagery/7.png"/>
        </div>            <div class="col vertical">
            <img class="center-block" width="150" src="imagery/8.png"/>
        </div>
</div>

希望对您有所帮助。

Answer 5

    HTML:

<div class="row imageCenterAlign topAlign">
        <div class="col">
            <img class="center-block image-center" width="150" src="imagery/1.png"/>
        </div>
        <div class="col">
            <img class="center-block image-center" width="150" src="imagery/2.png"/>
        </div>            <div class="col">
            <img class="center-block image-center" width="150" src="imagery/3.png"/>
        </div>            <div class="col">
            <img class="center-block image-center" width="150" src="imagery/4.png"/>
        </div>
    </div>

    <div class="row imageCenterAlign">
        <div class="col">
            <img class="center-block" width="150" src="imagery/5.png"/>
        </div>            <div class="col">
            <img class="center-block" width="150" src="imagery/6.png"/>
        </div>            <div class="col">
            <img class="center-block" width="150" src="imagery/7.png"/>
        </div>            <div class="col">
            <img class="center-block" width="150" src="imagery/8.png"/>
        </div>
    </div>

css:
.imageCenterAlign{
    display: flex;
    justify-content: center;
    align-items: center;
}
.topAlign{
    top:50%;
}

Answer 6

此 CSS 将响应任何设备。它将水平和垂直居中。

.col {
    margin: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

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