fix a bug on safari where the menu took the full screen...

fix a bug on safari where the menu took the full screen #8

src/app/launcher/launcher.component.html

@@ -44,11 +44,15 @@
             Advanced
         </mat-expansion-panel-header>
         Select an API server
+        <div style="width: 100%">
+        <mat-form-field>
         <mat-select [ngModel]="selectedApiServer" (selectionChange)="backendSelectionService.setApiServer($event.value)">
             <mat-option *ngFor="let apis of backendSelectionService.apiservers|async" [value]="apis">
                 {{ apis.name }}
             </mat-option>
         </mat-select>
+        </mat-form-field>
+        </div>
         <button type="button" mat-button (click)="fileInput.click()">Load Config</button>
         <input hidden (change)="loadConfig($event)" accept=".json" #fileInput type="file" id="file">
         <button mat-button (click)=resetConfig()>Reset Config</button>