如何在Bootstrap 4上使用间距实用程序类

问题描述:

在这篇文章中,我看到了Bootstrap 4 Spacing Utility类,他在 className 中使用 mb-lg

In this article I saw Bootstrap 4 Spacing Utility Classes, and he uses m-b-lg in className.

<div class="row">
    <div class="col-sm-6 m-b-lg">
        <!-- column-small-50%, margin-bottom-large -->
    </div>
</div>

但是当我在流星上使用它时,没有任何反应。

But when I use it on meteorjs with react nothing happens. Am I missing something or missing a plugin?

<div className="container-fluid">
    <div className="col-xs-6 col-xs-offset-3 m-t-lg">
        <h1 className="text-xs-center"> Login </h1>
        <form>
            <div className="form-group">
                <input type="email" className="form-control" id="inputEmail" placeholder="Email"/>
            </div>
            <div className="form-group">
                <input type="password" className="form-control" id="inputPassword" placeholder="Password"/>
                <p className="text-xs-center"><a href="/signup"> Forgot your email or password?</a></p>
            </div>      
            <div className="form-group">
                <button className="btn btn-primary btn-block" type="submit"> Login </button>
                <p className="text-xs-center"> New to Arcademy? <a href="/signup"> Sign up now.</a></p>
            </div>
        </form>
    </div>
</div>


请参阅 Spacing (Bootstrap v4 alpha)文档。

Refer to the Spacing (Bootstrap v4 alpha) documentation.

使用以下格式命名: {property} - {sides} - {size}


0 - 用于消除 margin
padding 设置为 0 * 1 - (默认情况下)对于
将边距或填充设置为 $ spacer-x $ spacer-y * 2 - (由
默认值)保证金或填充为 $ spacer-x *
1.5
$ spacer-y * 1.5 * 3 - (默认情况下)将margin或padding设置为 $ spacer-x * 3 $ spacer-y * 3 $ c的类

Where size is one of: * 0 - for classes that eliminate the margin or padding by setting it to 0 * 1 - (by default) for classes that set the margin or padding to $spacer-xor $spacer-y * 2 - (by default) for classes that set the margin or padding to $spacer-x * 1.5 or $spacer-y * 1.5 * 3 - (by default) for classes that set the margin or padding to $spacer-x * 3 or $spacer-y * 3.

因此,使用 mt-3 代替 mt-lg