title: How to customize error pages served via the default backend of an nginx ingress controller?
body: <p>I'm running an Nginx Ingress Controller installed via Helm on my Kubernetes cluster. I would like to change the HTML/CSS in the default backend service for some specific errors (e.g. 404). </p>
  
  <p><a href="https://kubernetes.github.io/ingress-nginx/user-guide/default-backend/" rel="noreferrer">This</a> link provides  some general information about the default backend. However, there is no mention of how to actually customize the served HTML/CSS files. </p>