body {
    font-family: Geneva, Tahoma, Verdana, sans-serif;
/*    font-size: 18px;*/
}

a {
  text-decoration: none;
  font-weight: bold;
}

a:link, a:active, a:visited {
  color: #55f;
}

a:hover {
  color: #33a;
}

button {
  margin-top: 5px;
  background-color: white;
  color: black;
  border: 2px solid green;
  border-radius: 5px;
  padding: 3px 10px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 20px;
}

button:hover {
  background-color: green;
  color: white;
  cursor: pointer;
}