<meta name="viewport" content="height = [pixel_value | device-height],width = [pixel_value | device-width ],initial-scale = float_value,minimum-scale = float_value,maximum-scale = float_value,user-scalable = [yes | no],target-densitydpi = [dpi_value | device-dpi | high-dpi | medium-dpi | low-dpi]"=
阅读背景：
手机端禁止网页页面放大代码
来源：互联网
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