Offline status means that the computer is not connected to the network. Usually, after the browser is opened, the browser is not connected to the internet. By default, the browser will use offline browsing (browsing away from the network). Because the web pages you usually browse will be saved on the local machine, you can still browse the browsed information after disconnecting from the network.
Offline work, as its name implies, is an artifact that browses web pages without connecting to the network. The network connection here refers to the server that logs into a specific website.