响应式

• iPhone 发布
• 移动端优先
• bootstrap
• 媒体查询
• grid system

iPhone 发布

https://www.apple.com/newsroom/2007/01/09Apple-Reinvents-the-Phone-with-iPhone/

https://www.youtube.com/watch?v=VQKMoT-6XSg&ab_channel=ProtectstarInc.

Every once in a while, a revolutionary product comes along that changes everything …

移动端优先

bootstrap

媒体查询

grid system