How can I change the style of the login page

Help / Discuss
1

I want to add below css styles to my login page (Xwiki 9.8.1)

#mainContentArea, #xdocFooter, #docextrapanes {
background: none;
box-shadow: none;
margin: 0px;
padding: 0px;
}

How can I add these css style

2

Hi, maybe this can help :https://www.xwiki.org/xwiki/bin/view/FAQ/How%20to%20integrate%20HTML%2C%20JS%20and%20CSS%20in%20XWiki