body {
  background: radial-gradient(circle, #040e23, #03163d);
  color: #fff;
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 20px;
}

.container {
  margin-top: 20px;
}

h1 {
  color: #fff;
  font-size: 28px;
  margin-bottom: 20px;
}

.continent-title {
  color: #fff;
  font-size: 24px;
  font-weight: bold;
  margin-top: 40px;
}

.country-title {
  color: #fff;
  font-size: 20px;
  margin-top: 20px;
}

.country-flag {
  margin-right: 10px;
}

.list-group {
  margin-top: 20px;
}

.list-group-item {
  background-color: #444;
  color: #fff;
  border: none;
  border-radius: 0;
}

.list-group-item:hover {
  background-color: #666;
  color: #fff;
}

a {
  color: #fff;
}

a:hover {
  color: #fff;
  text-decoration: none;
}