Progressive web apps
Identifiable as applications, findable by search engines.
Available on the device, on users' home screens — without the hassle of an app store.
可安装，Web App Manifest
Easily shareable via URLs, without requiring complex installation.
Works offline or on low quality networks.
Using service workers， Using IndexedDB， Using the Web Storage API， Instant Loading Web Apps with An Application Shell Architecture
Works for every user, regardless of browser choice.
// 对兼容性启用渐进增强
Makes user engagement easy by drawing attention, even when users aren't using their devices.
让用户重新回到 WebApp， 通过 sw， push， notification
Fits any form factor: desktop, mobile, tablet, or whatever comes next.
Media queries（希望 Element queries，应用于web组件）， @viewport/viewport meta tag， Flexbox
Delivery mechanism prevents snooping and ensures content hasn’t been tampered with.
HTTPS（HTTP2/3 弥补速度慢的问题）
