题解 | #CSS单位(二)#
CSS单位(二)
https://www.nowcoder.com/practice/9516d4bf653046ef967cca945bb3f37b
{"css":"","js":"","html":"<html>\n <head>\n <meta charset=utf-8>\n <style type=\"text/css\">\n div {\n /*补全代码*/\n width:4rem;\n height:4rem;\n }\n </style>\n </head>\n <body>\n <div></div>\n </body>\n</html>","libs":[]}
em相对于父元素,rem相对于根元素。
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