To make it easier to lookup an HTTP status code in Google Chrome, simply open your Chrome search engine settings and define a new search engine:

Search Engine: HTTP Status Codes
Shortcut: status (or whatever you choose)
URL with %s in place of query: https://davidbiesack.github.io/http-status-codes/%s

Then simply use the shortcut in the browser address bar

status <space> 418

Search with the shortcut

… and Voila: