<div style="background-color:lightgray;width:300px;float:left">
  <button (click)="cli('f')">first doc</button><br>
  <button (click)="cli('s')">sec doc</button><br>
  <button (click)="cli('t')">third doc</button><br>

VAR1 :<input id="var1"><br>
VAR2 :<input id="var2"><br>
VAR3 :<input id="var3"><br>
<button (click)="send()">Send to html</button>

</div>
<div style="background-color:beige;width:700px;float:left"> <app-show></app-show> </div>