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function isLandscape() {
    if (window.matchMedia('(orientation: landscape)').matches) {
        return true;
    } else if (window.matchMedia('(orientation: portrait)').matches) {
        return false;
    }
    return true;
}

function nextDay (dd = 1) {
  let today = new Date()
  let outDay = new Date()
  outDay.setDate(today.getDate() + dd)
  return outDay
}