Browser height detection

gistfile1.txt

let vh = window.innerHeight * 0.01;
let vw = window.innerWidth * 0.01;

const setDimensions = (_vh, _vw) => {
  const rs = _vh / _vw < 0.8 ? vh : vw;

  document.documentElement.style.setProperty('--vh', `${_vh}px`);
  document.documentElement.style.setProperty('--vw', `${_vw}px`);
  document.documentElement.style.setProperty('--rs', `${rs}px`);
};

setDimensions(vh, vw);

window.addEventListener('resize', () => {
  vh = window.innerHeight * 0.01;
  vw = window.innerWidth * 0.01;
  setDimensions(vh, vw);
});