optimising and making it better

src/app/components/back-button/back-button.component.ts

@@ -1,4 +1,4 @@
-import { Component } from '@angular/core';
+import { Component, ChangeDetectionStrategy } from '@angular/core';
 import { Location } from '@angular/common';
 import { environment } from '../../../environments/environment';
 
@@ -55,7 +55,8 @@ import { environment } from '../../../environments/environment';
         }
       }
     }
-  `]
+  `],
+  changeDetection: ChangeDetectionStrategy.OnPush
 })
 export class BackButtonComponent {
   isnovo = environment.theme === 'novo';