CSS CODE ...

button {
  color: white;
   background-color: #0074D9;
   border: 2px solid #0074D9;
   border-radius: 5px;
   margin: 10px;
   padding: 5px;
 }
 button:hover {
  color: #0074D9;
  background-color: white;
}
a {
  color: #0074D9;
  text-decoration: none;
  padding: 10px;
  font-size: 19px;
}
a:hover {
  color: #0085D9;
}