showBanner(e) {
const rect = this.btnDownload.current.getBoundingClientRect()
const isInView = rect.top < window.innerHeight
const isAtTop = rect.top <= 0
console.log('Is in view:', isInView)
console.log('Is at top:', isAtTop)
}
function(event){
var box = //get a handle to box
box.style.position = 'aboslute';
box.style.left = event.page.x;
box.style.top = event.page.y;
}