Dark Mode based on System

style.css

body {
    font-family: monospace;
    background-color: #1d1f21;
    color: #FFF;
}

a:link {
    text-decoration:none;
    color:#CC3300;
}

a:visited {
    color:#009900;
}

a:hover {
    color:#0066FF;
}

a:active {
    color:#0066FF;
}

@media (prefers-color-scheme: light) {
    body {
      background-color: whitesmoke;
      color: #1d1f21;
    }
    
    a:hover {
        color:#1d1f21;
    }
    
    a:active {
        color:#1d1f21;
    }
  }
  
hr { background-color: #41454a; height: 1px; border: 0; }