body {
  font-family: Arial, sans-serif;
  background-color: skyblue;
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}
.container {
  background: aliceblue;
  border: 2px solid steelblue;
  padding: 30px 40px;
  border-radius: 15px;
  text-align: center;
  box-shadow: 2px 4px 10px lightsteelblue;
  width: 320px;
}
h1 {
  color: royalblue;
  margin-bottom: 18px;
}
label {
  font-weight: bold;
  margin-bottom: 8px;
  display: inline-block;
  color: mediumblue;
}
select {
  padding: 8px;
  width: 100%;
  border-radius: 8px;
  border: 1px solid dodgerblue;
  margin-top: 8px;
  font-size: 1rem;
}
button {
  margin-top: 20px;
  padding: 10px 24px;
  background-color: navy;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
  font-size: 1rem;
}
button:hover {
  background-color: royalblue;
  color: aliceblue;
}
.output {
  margin-top: 24px;
  font-size: 1.2rem;
  font-weight: 600;
  color: mediumblue;
}