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>
所以，是的，Bootstrap 4确实使一行中所有的cols高度相等，然而，如果你在一行内的内容周围创建边框，你可能会发现它看起来像cols不等高!
当我对col内的元素应用height: 100%时，我发现我失去了边缘。
我的解决方案是在col的div上使用填充(而不是在内部元素上使用边缘)。像这样:
<div class="container">
<div class="row">
<div class="col-lg-4 col-md-6 col-12 py-4">
<div class="h-100 border round">
...
</div>
</div>
<div class="col-lg-4 col-md-6 col-12 py-4">
<div class="h-100 border round">
...
</div>
</div>
<div class="col-lg-4 col-md-6 col-12 py-4">
<div class="h-100 border round">
...
</div>
</div>
<div class="col-lg-4 col-md-6 col-12 py-4">
<div class="h-100 border round">
...
</div>
</div>
<div class="col-lg-4 col-md-6 col-12 py-4">
<div class="h-100 border round">
...
</div>
</div>
<div class="col-lg-4 col-md-6 col-12 py-4">
<div class="h-100 border round">
...
</div>
</div>
<div class="col-lg-4 col-md-6 col-12 py-4">
<div class="h-100 border round">
...
</div>
</div>
<div class="col-lg-4 col-md-6 col-12 py-4">
<div class="h-100 border round">
...
</div>
</div>
<div class="col-lg-4 col-md-6 col-12 py-4">
<div class="h-100 border round">
...
</div>
</div>
</div>
</div>
上面的代码示例使用Bootstrap 4.1创建一组带有边框的9个方框
这是我的方法，我已经使用flex与一些变化的媒体查询。
@media (min-width: 0px) and (max-width: 767px) {
.fsi-row-xs-level {
display: -webkit-box;
display: -webkit-flex;
display: -ms-flexbox;
display: flex;
}
}
@media (min-width: 768px) and (max-width: 991px) {
.fsi-row-sm-level {
display: -webkit-box;
display: -webkit-flex;
display: -ms-flexbox;
display: flex;
}
}
@media (min-width: 992px) and (max-width: 1199px) {
.fsi-row-md-level {
display: -webkit-box;
display: -webkit-flex;
display: -ms-flexbox;
display: flex;
}
}
@media (min-width: 1200px) {
.fsi-row-lg-level {
display: -webkit-box;
display: -webkit-flex;
display: -ms-flexbox;
display: flex;
}
}
然后将所需的类添加到父类中。
<div class="row fsi-row-lg-level fsi-row-md-level">
<div class="col-sm-4">column 1</div>
<div class="col-sm-4">column 2</div>
<div class="col-sm-4">column 3</div>
</div>
我使用响应式断点，因为流量通常会阻碍引导标准响应特性。
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>
我想我只是补充一下，Dr.Flink给出的答案也可以应用到Bootstrap 3表单水平块——如果你想为每个单元格使用背景色，这是非常方便的。为了使这适用于引导表单，您需要包装表单内容，这只是为了复制一个类似表格的结构。
下面的例子还提供了CSS，它演示了一个额外的媒体查询允许Bootstrap 3简单地接管并在较小的屏幕上做正常的事情。这也适用于IE8+。
例子:
<form class="form-horizontal" role="form">
<div class="form-wrapper">
<div class="form-group">
<label class="col-xs-12 col-sm-2 control-label">My Label</label>
<div class="col-xs-12 col-sm-10">
Some content
</div>
</div>
</div>
</form>
.form-wrapper {
display: table;
}
.form-wrapper .form-group {
display: table-row;
}
.form-wrapper .form-group .control-label {
display: table-cell;
float: none;
}
.form-wrapper .form-group label + div {
display: table-cell;
float: none;
}
@media (max-width: 768px) {
.form-wrapper {
display: inherit;
}
.form-wrapper .form-group {
display: block;
}
.form-wrapper .form-group .control-label {
display: inherit;
}
.form-wrapper .form-group label + div {
display: inherit;
}
}
