以材料设计精简为中心的形式 [英] Centered form with material design lite

问题描述

我正在寻找一种使用Google的 Material Design Lite 库以屏幕为中心的登录表单。

I am looking for an easy to get a login form centered on the screen using Google's Material Design Lite library.

我经历了许多次迭代，这是我得到的最好结果：

I've been through a number of iterations and this is the best I've come up with:

<div class="mdl-cell--12-col mdl-grid">
    <div class="mdl-cell mdl-cell--4-col mdl-cell--2-col-tablet">&nbsp;</div>

    <div class="mdl-grid mdl-cell--4-col">

        <div class="mdl-textfield mdl-js-textfield mdl-cell-12-col">
            <input class="mdl-textfield__input" type="text" id="username" />
            <label class="mdl-textfield__label" for="username">Username</label>
        </div>

        <div class="mdl-textfield mdl-js-textfield mdl-cell-12-col">
            <input class="mdl-textfield__input" type="password" id="password" />
            <label class="mdl-textfield__label" for="password">Password</label>
        </div>
    </div>

    <div class="mdl-cell mdl-cell--4-col mdl-cell--2-col-tablet">&nbsp;</div>
</div>

是否有更好的方式在所有屏幕尺寸上实现居中表单？

Is there a better way of achieving a centered form on all screen sizes?

具有& nbsp; 的div感觉真的很糟糕！

The divs with   feel really yucky!

推荐答案

如何使用mdl-layout-spacer：请参阅 codepen

How about using "mdl-layout-spacer": See codepen

<div class="mdl-grid">
    <div class="mdl-layout-spacer"></div>
    <div class="mdl-cell mdl-cell--4-col">This div is centered</div>
    <div class="mdl-layout-spacer"></div>
</div>

或者如果您更喜欢css解决方案：
向包含列居中。请参阅 codepen

Or if you prefer a css solution: Add an extra class to the grid containing the column to be centered. See codepen

<div class="mdl-grid center-items">
    <div class="mdl-cell mdl-cell--4-col">This div is centered</div>
</div>

.mdl-grid.center-items {
  justify-content: center;
}

这两个选项在调整大小时都会很好。

Both options play nice when resizing.

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