摘要：
1. 视口：(布局视口(layout viewport)，视觉视口(visual viewport)，理想视口(ideal viewport)) meta 视口标签 <meta name = "viewport" content = “ width = device-width，user-scala 阅读全文
摘要：
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <meta http-equiv="X-UA-Compatible" content="ie=edge" /> <title 阅读全文