main:before {
width: 100%;
height: 300px;
display: block;
content: "";
background-image: url('https://media.discordapp.net/attachments/473079589367840778/1144956097988407466/Space-Background-Image-3.jpg?width=984&height=655');
background-position: center center;
background-size: cover;
}
@media only screen and (max-width: 600px) {
main:before{
height: 200px;
}
}
body {
background-color: #9da1b8;
}
body{
background-image:url( );
background-attachment:fixed;background-size:cover;