fix back 233

src/app/lobby/lobby.component.html

@@ -77,7 +77,10 @@
     <mat-icon fontSet="fa" fontIcon="fa-trophy"></mat-icon>
     <br>决斗数据库</a></mat-grid-tile>
   <mat-grid-tile>
-    <button mat-raised-button (click)="ygopro.backHome()"><span class="icon">233</span><br>直连</button>
+    <button mat-raised-button (click)="ygopro.backHome()">
+      <mat-icon>sensor_door</mat-icon>
+      <br>返回直连
+    </button>
   </mat-grid-tile>
   <!--<mat-grid-tile><a mat-raised-button>-->
   <!--<mat-icon>casino</mat-icon>-->