Astro component syntax is a superset of HTML. The syntax was designed to feel familiar to anyone with experience writing HTML or JSX, and adds support for including components and JavaScript expressions.| Docs
The HTTP Last-Modified response header contains a date and time when the origin server believes the resource was last modified. It is used as a validator in conditional requests (If-Modified-Since or If-Unmodified-Since) to determine if a requested resource is the same as one already stored by the client. It is less accurate than an ETag for determining file contents, but can be used as a fallback mechanism if ETags are unavailable.| MDN Web Docs
astro:assets was designed to make it easy for any image optimization service to build a service on top of Astro.| Docs
The following reference covers all supported configuration options in Astro. To learn more about configuring Astro, read our guide on Configuring Astro.| Docs
The HTTP If-None-Match request header makes a request conditional. The server returns the requested resource in GET and HEAD methods with a 200 status, only if it doesn't have an ETag matching the ones in the If-None-Match header. For other methods, the request will be processed only if the eventually existing resource's ETag doesn't match any of the values listed.| MDN Web Docs
Accessibility resources free online from the international standards organization: W3C Web Accessibility Initiative (WAI).| Web Accessibility Initiative (WAI)
