h1 {
  text-align: center;
}
body {
  background-image: url(https://emmaleo.neocities.org/_.jpeg);
  background-repeat: no-repeat;
  background-size: cover; 
  background-position: center;
  background-attachment: fixed;
}
.container {
  width: 800px;
  margin: 20px auto;
}
<iframe src="https://petracoding.github.io/neocities/widgets/lastfm?center=0&marquee=0&font-family=Arial&font-size=16px&color=#0d7d0d&username=Petra1999&swapPositions=1&delimiter=~&underline=1" frameborder="0" title="Last.Fm Status"></iframe>