#rb:link, #rb:visited {  
  color: rgb(33, 148, 90); 
  padding: 10px 20px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
}

#rb:hover, #rb:active { 
  color: rgb(68, 45, 1);
}