body {
color: #000;
background: url("https://i.loli.net/2020/02/06/4sqTHbntfPUrV8L.jpg") fixed;
background-size: 1925px;
background-repeat: no-repeat;
font-family: "Helvetica Neue",Helvetica,Verdana,Arial,sans-serif;
font-size: 12px;
min-height: 101%;

<img style="position:fixed;" src="https://a.lanyes.org/bg1.jpg" height="100%" width="100%" />
</div>

}