html{ 
  color:yellow;
  background: url(https://free4kwallpapers.com/uploads/originals/2020/09/04/neon-background--wallpaper.jpg);
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  height: 100%;
}
h1{
  margin-left:160px;
  margin-right:150px;
  float:center;
  background: rgb(141, 60, 222, 0.6);
  border:hidden;
  width:580px;
  height:40px;
  font-family:sans-serif;
  Font-style:Italic;
  text-decoration: underline wavy; 
}
.main{
  margin-left:160px;
  margin-right:150px;
  float:center;
}
h2{
   background: rgb(141, 60, 222, 0.6);
}
ol{
  font-weight:bold;
  font-size:22px;
  background: rgb(66, 108, 245, 0.6)
}