<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;"><div class="mat-grid-list" cols="4" rowHeight="100px"> <div class="mat-grid-tile" style="grid-column: span 1; grid-row: span 2; background-color: lightpink;"> Three </div> <div class="mat-grid-tile" style="grid-column: span 0; grid-row: span 0; background-color: lightgreen;"> Two </div> <div class="mat-grid-tile" style="grid-column: span 3; grid-row: span 1; background-color: #DDBDF1;"> Four </div> </div></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>