文档中写着“网格默认居中对齐。”。
但是,以下代码不会使单元格居中:
<html>
<head>
<link href="https://unpkg.com/material-components-web@latest/dist/material-components-web.min.css" rel="stylesheet">
<script src="https://unpkg.com/material-components-web@latest/dist/material-components-web.min.js"></script>
<link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">
</head>
<body>
<div class="mdc-layout-grid">
<div class="mdc-layout-grid__inner">
<div class="mdc-layout-grid__cell mdc-layout-grid__cell--span-4">
<div class="mdc-card my-card">
<div class="my-card__media mdc-card__media mdc-card__media--16-9" style="background-image: url('image.png');">
</div>
</div>
</div>
</div>
</div>
</body>
</html>