Postcss-px-to-viewport configuration issu

postcss-px-to-viewport is used for adaptation in vue. Configure as follows

postcss: {
                plugins: [
                    autoprefixer(),
                    pxtovw({
                        viewportWidth: 750, 
                        viewportHeight: 1334,  
                        unitPrecision: 3, 
                        viewportUnit: "vw", 
                        selectorBlackList: [".ignore", ".hairlines"], 
                        minPixelValue: 1, 
                        mediaQuery: false 
                    })
                ]
            }

but I found that the effect of iphone6/7/8 is exactly half of what I expected.

 .scroll-wrapper{
      height: 500px;
      border: 1px solid rgba(0, 0, 0, 0.1);
    }

is there something wrong with my configuration, or is it wrong on the Internet?

Webpack vue.js

Jun.30,2022

cut viewportWidth and viewportHeight by half

try unitPrecision: 2

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