div { 边框:1px实体; ｝ 跨度{ 显示:flex; 对齐项目:中心; ｝ .col-5 { 宽度:100 px; 高度:50 px; 浮:左; 背景:红色; ｝ .col-7 { 宽度:200 px; 高度:24 px; 浮:左; 背景:绿色; ｝ < span > < div class = " col-5”> < / div > < div class = " col-7 " > < / div > < / span >

我详细阐述了zessx的答案，以便在不同屏幕尺寸上混合不同的列大小时更容易使用。

如果你使用Sass，你可以把这个添加到你的scss文件中:

@mixin v-col($prefix, $min-width) {
    @media (min-width: $min-width) {
        .col-#{$prefix}-v {
            display: inline-block;
            vertical-align: middle;
            float: none;
        }
    }
}

@include v-col(lg, $screen-lg);
@include v-col(md, $screen-md);
@include v-col(sm, $screen-sm);
@include v-col(xs, $screen-xs);

它生成以下CSS(如果你不使用Sass，你可以直接在你的样式表中使用):

@media (min-width: 1200px) {
    .col-lg-v {
        display: inline-block;
        vertical-align: middle;
        float: none;
    }
}

@media (min-width: 992px) {
    .col-md-v {
        display: inline-block;
        vertical-align: middle;
        float: none;
    }
}

@media (min-width: 768px) {
    .col-sm-v {
        display: inline-block;
        vertical-align: middle;
        float: none;
    }
}

@media (min-width: 480px) {
    .col-xs-v {
        display: inline-block;
        vertical-align: middle;
        float: none;
    }
}

现在你可以像这样在你的响应列上使用它:

<div class="container">
    <div class="row">
        <div class="col-sm-7 col-sm-v col-xs-12">
            <p>
                This content is vertically aligned on tablets and larger. On mobile it will expand to screen width.
            </p>
        </div><div class="col-sm-5 col-sm-v col-xs-12">
            <p>
                This content is vertically aligned on tablets and larger. On mobile it will expand to screen width.
            </p>
        </div>
    </div>
    <div class="row">
        <div class="col-md-7 col-md-v col-sm-12">
            <p>
                This content is vertically aligned on desktops and larger. On tablets and smaller it will expand to screen width.
            </p>
        </div><div class="col-md-5 col-md-v col-sm-12">
            <p>
                This content is vertically aligned on desktops and larger. On tablets and smaller it will expand to screen width.
            </p>
        </div>
    </div>
</div>

在div的CSS中试试这个:

display: table-cell;
vertical-align: middle;

下面的代码适合我:

.vertical-align {
    display: flex;
    align-items: center;
}

我花了很多时间从这里尝试解决方案，但没有一个对我有帮助。几个小时后，我相信这将允许你在BS3的任何子元素的中心。

CSS

.vertical-center {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

HTML

<div class="col-md-6 vertical-center">
    <div class="container">
        <div class="row">
        </div> 
    </div>   
</div>

HTML

<div class="row">
    <div class="col-xs-2 pull-bottom"
         style="height:100px;background:blue">
    </div>
    <div class="col-xs-8 pull-bottom"
         style="height:50px;background:yellow">
    </div>
</div>

CSS

.pull-bottom {
    display: inline-block;
    vertical-align: bottom;
    float: none;
}