摘要：
@charset "utf-8"; /* CSS Document */ body {background:red;} @charset "utf-8"; /* CSS Document */ body {background: yellow;} 阅读全文
摘要：
<html> <head> <meta charset="utf-8"> <title>无标题文档</title> <style type="text/css"> #div1 { width: 100px; height: 100px; background: red; } </style> <sc 阅读全文