body {
  font-family: Arial;
  text-align: center;
  margin-top: 80px;
  background: #f4f4f4;
}

h2 {
  margin-bottom: 20px;
}

input {
  padding: 10px;
  width: 260px;
}

button {
  padding: 10px;
  margin: 5px;
  cursor: pointer;
}

#result {
  margin-top: 20px;
  font-weight: bold;
}

ul {
  list-style: none;
  padding: 0;
}

li {
  padding: 5px;
}