body {
  font-family: 'Arial', sans-serif;
  background-color: #f4f4f4;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  background-color: #fff;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 400px;
}

h1 {
  text-align: center;
  color: #333;
}

.input-group {
  margin-bottom: 15px;
}

label {
  display: block;
  font-weight: bold;
  margin-bottom: 5px;
}

input, select {
  width: 100%;
  padding: 10px;
  margin-bottom: 10px;
  border: 1px solid #ccc;
  border-radius: 5px;
}

.calculate-btn {
  width: 100%;
  padding: 10px;
  background-color: #28a745;
  color: #fff;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 16px;
}

.calculate-btn:hover {
  background-color: #218838;
}

#result-container {
  margin-top: 20px;
  text-align: center;
}

#result {
  font-size: 20px;
  color: #333;
}

#result-prewash {
  font-size: 20px;
  color: #333;
}

#result-mainwash-prewash {
  font-size: 20px;
  color: #333;
}