.container a:not(:visited) {
  color: green;
}

BODY {background-image: url( https://images.freeimages.com/images/premium/previews/2044/20447121-gold-and-money.jpg                 ); }




.article p::first-letter {
  background-color:DarkGoldenrod; 
}


.menu li:nth-child(3) {
  
 color:green;
  font-weight:times ;
}


.cta-button:hover button {
  background-color: #00BFFF; 
}


.container > .highlight {
  
  background-color: green;
  font-weight:bold;
  
}


.navbar a:active {
  
  color: green;
  font-weight:bold;
  
}


table tr:nth-child(odd) {
  border: 1px solid black; 
}


.sidebar > :last-child {
  margin-right: 30px; 
}


.container > :first-child:hover {
  
  background-color: yellow;
  
}


.header + .warning {
  
  color: blue;
  
}