body {
  background-color: #1f1f1f;
  color: #ffffff;
  font-family: Arial, sans-serif;
}

h1, h2, h3, h4, h5, h6 {
  color: #ffffff;
}

a {
  color: #ffffff;
}

a:hover {
  color: #cccccc;
}

.container {
  background-color: #333333;
  color: #ffffff;
}

.button {
  background-color: #555555;
  color: #ffffff;
  border: none;
  padding: 10px 20px;
  text-align: center;
  display: inline-block;
  margin: 5px;
  cursor: pointer;
}

.button:hover {
  background-color: #777777;
}