body {
  font-family: Verdana, sans-serif;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background-color: #124f5c;
}

.container {
  text-align: center;
  background-color: #fff;
  padding: 20px;
  border-radius: 5px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

h1 {
  margin-bottom: 20px;
}

.instructions {
  text-align: left;
  margin-bottom: 20px;
  padding: 10px;
  background-color: #f5f5f5;
  border-radius: 5px;
}

.instructions p {
  margin-bottom: 10px;
}

.instructions ul {
  margin-left: 20px;
}

form {
  margin-bottom: 20px;
}

input[type="text"] {
  margin-right: 10px;
  padding: 5px;
}

button {
  padding: 5px 10px;
}

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