Fully working with the rule no explicit any

bookie/src/app/header-footer/header-footer.component.ts

@@ -1,6 +1,7 @@
 import { Component, ElementRef, OnInit, ViewChild } from '@angular/core';
 import { FormBuilder, FormGroup } from '@angular/forms';
 import { MatDialog } from '@angular/material/dialog';
+import { MatSelectChange } from '@angular/material/select';
 import { ActivatedRoute, Router } from '@angular/router';
 import { map } from 'rxjs/operators';
 
@@ -74,7 +75,7 @@ export class HeaderFooterComponent implements OnInit {
     return item;
   }
 
-  show(val: any) {
+  show(val: MatSelectChange) {
     this.router.navigate(['/header-footer', val.value]);
   }
 }