Emotion is a library designed for writing CSS styles with JavaScript.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Netlify providers hosting and server-less backend services for web applications and static websites.
Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.