body {
  font-family: Arial, sans-serif;
  color: purple;
  margin: 20px;
}

header {
  text-align: center;
  margin-bottom: 40px;
}

h1 {
  font-size: 2em;
  color: darkgreen;
}

h2 {
  color: white;
  margin-bottom: 20px;
  text-align: center;
}


.button {
  display: inline-block;
  margin-top: 15px;
  padding: 10px 20px;
  background-color: #9933cc;
  color: white;
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
  cursor: pointer;
}

.button:hover {
  background-color: #bf66ff;
}

#tip, #haekelTip {
  margin-top: 10px;
  font-style: italic;
  color: #444;
}

footer {
  margin-top: 50px;
  text-align: center;
  font-size: 0.9em;
  color: #666;
}