Add ripple everywhere.

frontend/src/app/components/header/header.component.html

@@ -1,5 +1,9 @@
 <div class="left">
-    <button type="button" (click)="sideMenu.open()" matTooltip="Click to show side menu" i18n-matTooltip>
+    <button type="button"
+            (click)="sideMenu.open()"
+            matTooltip="Click to show side menu" 
+            matRipple 
+            i18n-matTooltip>
         <mat-icon>menu</mat-icon>
     </button>
     <a [routerLink]="['/home']">
@@ -14,7 +18,10 @@
 
 <div class="right">
     @if (isAuthenticated) {
-        <button mat-button class="button" [matMenuTriggerFor]="authenticatedUserMenu">
+        <button mat-button
+                class="button"
+                [matMenuTriggerFor]="authenticatedUserMenu" 
+                matRipple>
             <mat-icon>more_vert</mat-icon>
         </button>
         <mat-menu #authenticatedUserMenu="matMenu">
@@ -30,7 +37,7 @@
             </div>
         </mat-menu>
     } @else {
-        <a [routerLink]="['/login']" class="button" matRipple i18n>Login</a>
+        <a [routerLink]="['/login']" class="cod-btn" matRipple i18n>Login</a>
     }
 </div>
 <app-side-menu #sideMenu></app-side-menu>