async function fetchCurrency(currency) {
  const response = await fetch(`https://economia.awesomeapi.com.br/json/${currency}-BRL`);
  const data = await response.json();

  if (currency === 'USD'){
      const currentUSD = data[0].bid.replace(".", ",");
      usd = data[0].bid;
      document.querySelector('#usd').insertAdjacentHTML('beforeend', currentUSD);
  } else if (currency === 'EUR'){
      const currentEUR = data[0].bid.replace(".", ",");
      eur = data[0].bid;
      document.querySelector('#eur').insertAdjacentHTML('beforeend', currentEUR);
  } else if (currency === 'CAD'){
      const currentCAD = data[0].bid.replace(".", ",");
      cad = data[0].bid;
      document.querySelector('#cad').insertAdjacentHTML('beforeend', currentCAD);
  }
}