我正在使用Bootstrap。如何让三根柱子都一样高呢?

下面是问题的截图。我希望蓝色和红色的列和黄色的列一样高。

代码如下:

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/> <div class="container-fluid"> <div class="row"> <div class="col-xs-4 panel" style="background-color: red"> some content </div> <div class="col-xs-4 panel" style="background-color: yellow"> catz <img width="100" height="100" src="https://lorempixel.com/100/100/cats/"> </div> <div class="col-xs-4 panel" style="background-color: blue"> some more content </div> </div> </div>


当前回答

要回答你的问题,这是所有你需要看到完整的响应式演示与前缀css:

/* Using col-xs media query breakpoint but you can change 481 to 768 to only apply to col-sm and above if you'd like*/

@media only screen and (min-width : 481px) {
    .flex-row {
        display: flex;
        flex-wrap: wrap;
    }
    .flex-row > [class*='col-'] {
        display: flex;
        flex-direction: column;
    }
    .flex-row.row:after, 
    .flex-row.row:before {
        display: flex;
    }
}

要添加缩略图内容的支持,在伸缩列中,如上面的截图,还添加这个…注意,你也可以在面板上做到这一点:

.flex-row .thumbnail,
.flex-row .caption {
    display: flex;
    flex: 1 0 auto;
    flex-direction: column;
}
.flex-text {
    flex-grow: 1;
}    
.flex-row img {
    width: 100%;
}

虽然flexbox不能在IE9及以下版本中工作,但你可以使用带有条件标签的演示版本,并使用类似javascript网格的东西作为填充:

<!--[if lte IE 9]>

<![endif]-->

As for the other two examples in the accepted answer... The table demo is a decent idea but is being implemented wrong. Applying that CSS on bootstrap column classes specifically will without a doubt break the grid framework entirely. You should be using a custom selector for one and two the tables styles should not be applied to [class*='col-'] that have defined widths. This method should ONLY be used if you want equal height AND equal width columns. It is not meant for any other layouts and is NOT responsive. We can make it fallback however on mobile displays...

<div class="table-row-equal">
<div class="thumbnail">
    Content...
</div>
<div class="thumbnail">
    Content...
</div>
</div>
@media only screen and (min-width : 480px){
    .table-row-equal {
        display: table;
        width: 100%;
        table-layout: fixed;
        border-spacing: 30px 0px;
        word-wrap: break-word;
    }
    .table-row-equal .thumbnail {
        float: none;
        display: table-cell;
        vertical-align: top;
        width: 1%;
    }
}

Lastly, the first demo in the accepted answer which implements a version of the one true layout is a good choice for some situations, but not suitable for bootstrap columns. The reason for this is that all the columns expand to the container height. So this will also break responsiveness since the columns are not expanding to the elements next to them, but the entire container. This method will also not allow you to apply bottom margins to rows any longer and will also cause other issues along the way like scrolling to anchor tags.

有关完整的代码,请参阅自动添加flexbox代码前缀的Codepen。

其他回答

03/19/2019

**Bootstrap 4等高解决方案**

Bootstrap实用工具/flex为相等的高度

活生生的例子在Codepen

由父div固定高度或最小高度的引导类等高

<div class="d-flex align-content-stretch flex-wrap" style="min-height: 200px">
    <div>Flex height test text for example , Flex height test text for example </div>
    <div>Flex item</div>
    <div>Flex item</div>
    <div>Flex item</div>
 </div>

.bd-highlight { background-color: rgba(86,61,124,.15); border: 1px solid rgba(86,61,124,.15); } .fixed-height-200 { min-height: 200px; } <link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.1.3/css/bootstrap.min.css" rel="stylesheet"/> <br><br><br> <div class="d-flex align-content-stretch flex-wrap fixed-height-200"> <div class="p-2 bd-highlight">Flex item <br> 1111111111</div> <div class="p-2 bd-highlight bg-danger">Flex item</div> <div class="p-2 bd-highlight">Flex item</div> <div class="p-2 bd-highlight bg-info">Flex item</div> <div class="p-2 bd-highlight">Flex item</div> <div class="p-2 bd-highlight">Flex item</div> <div class="p-2 bd-highlight bg-light">Flex item <br> 1111111111</div> <div class="p-2 bd-highlight">Flex item <br> 1111111111</div> <div class="p-2 bd-highlight">Flex item <br> 1111111111</div> <div class="p-2 bd-highlight">Flex item</div> <div class="p-2 bd-highlight bg-primary">Flex item</div> <div class="p-2 bd-highlight">Flex item</div> <div class="p-2 bd-highlight">Flex item</div> <div class="p-2 bd-highlight">Flex item</div> <div class="p-2 bd-highlight">Flex item</div> </div>

如果任何人使用bootstrap 4并寻找等高列,只需使用row-等高来父div

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css" rel="stylesheet" /> <div class="row row-eq-height"> <div class="col-xs-4" style="border: 1px solid grey;">.row.row-eq-height &gt; .col-xs-4</div> <div class="col-xs-4" style="border: 1px solid grey;">.row.row-eq-height &gt; .col-xs-4<br>this is<br>a much<br>taller<br>column<br>than the others</div> <div class="col-xs-4" style="border: 1px solid grey;">.row.row-eq-height &gt; .col-xs-4</div> </div>

裁判:http://getbootstrap.com.vn/examples/equal-height-columns/

我使用clearfix这个超级简单的解决方案,它没有任何副作用。

下面是AngularJS的一个例子:

<div ng-repeat-start="item in list">
    <div class="col-lg-4 col-md-6 col-sm-12 col-xs-12"></div>
</div>
<div ng-repeat-end>
    <div ng-if="$index % 3 == 2" class="clearfix visible-lg"></div>
    <div ng-if="$index % 2 == 1" class="clearfix visible-md"></div>
</div>

还有一个关于PHP的例子:

<?php foreach ($list as $i => $item): ?>
    <div class="col-lg-4 col-md-6 col-sm-12 col-xs-12"></div>
    <div class="clearfix visible-md"></div>
    <?php if ($i % 2 === 1): ?>
        <div class="clearfix visible-lg"></div>
    <?php endif; ?>
<?php endforeach; ?>

如果你想让它在任何浏览器中工作,使用javascript:

$( document ).ready(function() {
    var heights = $(".panel").map(function() {
        return $(this).height();
    }).get(),

    maxHeight = Math.max.apply(null, heights);

    $(".panel").height(maxHeight);
});
@media (min-width: @screen-sm-min) {
    div.equal-height-sm {
        display: table;


        > div[class^='col-'] {
            display: table-cell;
            float: none;
            vertical-align: top;
        }
    }
}

<div class="equal-height-sm">
    <div class="col-xs-12 col-sm-7">Test<br/>Test<br/>Test</div>
    <div class="col-xs-12 col-sm-5">Test</div>
</div>

例子:

https://jsfiddle.net/b9chris/njcnex83/embedded/result/

这里改编自几个答案。一旦IE8和ie9被淘汰,一旦Android 2被淘汰,基于flexbox的答案就是正确的方法。X已经死了,但在2015年并不是这样,在2016年也不会。IE8和ie9的使用率仍占4-6%,这取决于你如何衡量,对于许多企业用户来说,情况要糟糕得多。http://caniuse.com/#feat=flexbox

display: table, display: table-cell的技巧是向后兼容的,一个很棒的事情是唯一严重的兼容性问题是Safari的问题,它强制box-sizing: border-box,这已经应用到Bootstrap标签上了。http://caniuse.com/#feat=css-table

显然,您可以添加更多做类似事情的类,如.equal-height-md。我将这些标记与div绑定在一起,以便在受限制的使用中获得较小的性能收益,但您可以删除标记,使其像Bootstrap的其余部分一样更通用。

注意,这里的jsfiddle使用CSS,因此,Less将提供的内容硬编码在链接的示例中。例如@screen-sm-min已经被Less插入的- 768px所取代。