Weblfow Content Alignment Issue

Hi, I just made a fixed div to hide my article.

But somehow the published site is left aligned.

I’ve used memberstack code to funcionalize the fixed div:
`
#msGatedContentOverlay {
display: none;
}

`

Hi select the element you want to align and use the :horizontal alignment" in the “space” menu. see the attach picture
Screen Shot 2021-06-19 at 2.22.52 PM