body.dark-mode {
}

button#dark-mode-toggle {
  position: fixed;
  bottom: 20px;
  right: 20px;
  padding: 10px 15px;
  background-color: #ffffff;
  border: 1px solid #121212;
  border-radius: 5px;
  cursor: pointer;
}

body.dark-mode button#dark-mode-toggle {
  background-color: #121212;
  color: #ffffff;
  border: 1px solid #ffffff;
}