<p>我正在尝试使用Angular Material创建一个mat-grid-list，问题是我在页面上看不到任何东西出现</p> <p>这是我的组件info-section：</p> <pre class="brush:php;toolbar:false;">&lt;div class=&quot;mat-grid-list&quot; cols=&quot;4&quot; rowHeight=&quot;100px&quot;&gt; &lt;div class=&quot;mat-grid-tile&quot; style=&quot;grid-column: span 1; grid-row: span 2; background-color: lightpink;&quot;&gt; Three &lt;/div&gt; &lt;div class=&quot;mat-grid-tile&quot; style=&quot;grid-column: span 0; grid-row: span 0; background-color: lightgreen;&quot;&gt; Two &lt;/div&gt; &lt;div class=&quot;mat-grid-tile&quot; style=&quot;grid-column: span 3; grid-row: span 1; background-color: #DDBDF1;&quot;&gt; Four &lt;/div&gt; &lt;/div&gt;</pre> <p>一切都已安装和声明</p>

<mat-grid-list cols="4" rowHeight="100px">
  <mat-grid-tile colspan="1" rowspan="2" style="background-color: lightpink;">
    Three
  </mat-grid-tile>

  <mat-grid-tile colspan="1" rowspan="2" style="background-color: lightgreen;">
    Two
  </mat-grid-tile>

  <mat-grid-tile colspan="3" rowspan="1" style="background-color: #DDBDF1;">
    Four
  </mat-grid-tile>
</mat-grid-list>