body {
  font-family: Arial, sans-serif;
  background-color: #f4f6fb;
}

.container {
  width: 350px;
  margin: 80px auto;
  background: #fff;
  padding: 32px 24px 24px 24px;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.09);
  text-align: center;
}

.inputs {
  display: flex;
  justify-content: space-between;
  margin-bottom: 18px;
  gap: 8px;
}

label {
  display: flex;
  align-items: center;
  gap: 4px;
}

input[type="number"] {
  width: 60px;
  padding: 4px;
  border-radius: 4px;
  border: 1px solid #ddd;
}

button {
  padding: 8px 16px;
  background: #3b82f6;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-weight: bold;
  transition: background 0.2s;
}

button:hover {
  background: #2563eb;
}

#result {
  margin-top: 18px;
  font-size: 2em;
  color: #10b981;
  min-height: 40px;
}