body {
    background-color:orange;
}
h1 {
    color:#9dc4a5;
}
ol {
    font-family:arial;
}
#cool{
    
}
#mustard {
    
}
#goat {
    color:255, 0, 0;
}
.fred {
    
}
!important {
    
}
selector::before {
    color:;
}

 {
  visibility: visible;
}