How can I implement a custom Nginx 502 error page with padding to improve the user experience?

To implement a custom 502 error page with padding in Nginx, you'll need to create an HTML file and configure Nginx to serve it. First, create an HTML file (e.g., `502.html`) with the desired content and padding using CSS. Then, in your Nginx configuration file (e.g., `nginx.conf` or a site-specific config), use the `error_page` directive to point to your custom page. Example: `error_page 502 /502.html; location = /502.html { root /var/www/your_website; }`. You can then add CSS to the `502.html` file to style the padding.