有没有办法在颤动中保持相同的背景下浏览白色页面？

body {
  background-image: url('background.jpg');
  background-attachment: fixed;
}

window.addEventListener('scroll', function() {
  var background = document.querySelector('.background');
  background.style.top = -window.pageYOffset + 'px';
});

var canvas = document.getElementById('background-canvas');
var ctx = canvas.getContext('2d');
var img = new Image();
img.src = 'background.jpg';

function drawBackground() {
  ctx.clearRect(0, 0, canvas.width, canvas.height);
  ctx.drawImage(img, 0, 0, canvas.width, canvas.height);
}

window.addEventListener('scroll', function() {
  drawBackground();
});