Is this the simplest adaptive adaptation scheme for web mobile? Why

is this the simplest adaptive adaptation scheme for web mobile?

clipboard.png

html {
font-size: 62.5%;
font-size:calc (100vw/3.75);
font-size:-webket-calc (100vw/3.75); / Mobile adaptation /
}

what are the benefits and meaning of writing like this?

What do you mean by

62.5% and 3.75 in calc (100vw/3.75);?

Html5 css3 webapp Mobile-web
Aug.02,2021

search the rem layout
I'm afraid it's not compatible. If the browser doesn't support calc, it can use 62.5%;

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