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2024-09-27 02:06:13 +08:00
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历届学生/front-end-team/每天课程/2022-03-16/笔记.txt Normal file
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rem
和 px，%，em，vw vh
一种响应式的尺寸单位，一般用在移动端(H5)开发。
你写的 1 rem * html上font-size 16px = 实际的px单位
1: 媒体查询
2: 用js动态计算