i am using angular 7 when routerLink not working when i click on anchor button it's not working

in angular 7 i have define different component app folder and define component in route is well when i definde router name in url it,s work fine show me that component which is attached to that url but when i define that rout name in anchor tag click on anchor it,s not working here is my html code

<li class="nav-item">
<a class="nav-link" routerLink="/home">Home</a>
</li>
<li class="nav-item @@about">
<a class="nav-link" routerLink="/about">About</a>
</li>
<li class="nav-item @@blog">
<a class="nav-link" routerLink="/blog">BLOG</a>
</li>


this is my router

const routes: Routes = [{
path: '',
redirectTo: 'home',
pathMatch: 'full'
},
{
path: 'home',
component: HomeComponent
},
{
path: 'about',
component: AboutComponent
},
{
path: 'blog',
component: BlogComponent
},
];

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