VS2017 Web application CORS: Access-Control-Allow-Origin

I’m using Angular 6+ for a small website presenting a CRUD to a SQL Database. I know Angular is a client-side framework so I have created a web service using Visual Studio 2017 the project I used is a web application ASP.NET Core and since I’m testing it in a localhost, Angular runs over 4200 port and my service is currently on port 53819