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@property --vw {

syntax: '<length>';

inherits: true;

initial-value: 100vw;

  

}

  

@property --vh {

syntax: '<length>';

inherits: true;

initial-value: 100vh;

  

}

  

:root {

--w: tan(atan2(var(--vw), 1px));

--h: tan(atan2(var(--vh), 1px));

}

  

body::before {

content: counter(w) " X " counter(h);

counter-reset: w var(--w) h var(--h);

font-size: 150px;

font-weight: 900;

position: fixed;

inset: 0;

width: fit-content;

height: fit-content;

margin: auto;

}