* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    display: flex;
    justify-content: center;  
    align-items: center;      
    height: 100vh;            
    margin: 0;                
}

.container {
    background-color: white; 
    padding: 30px; 
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2); 
    border-radius: 10px;  
    border: 2px solid #ccc; 
    text-align: center; 
    width: 100%; 
    max-width: 400px; 
    margin: 20px auto; 

h1 {
    color: #333;
    margin-bottom: 20px;
}

form {
    margin: 20px 0;
}

label {
    display: block;
    margin: 10px 0 5px;
    font-size: 1rem;
    color: #333;
}

input, select, button {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    border-radius: 4px;
    border: 1px solid #ccc;
    font-size: 1rem;
}

button {
    background-color: #4CAF50;
    color: white;
    cursor: pointer;
}

button:hover {
    background-color: #45a049;
}

#result {
    font-size: 1.5em;
    margin-top: 20px;
    color: #4CAF50;
}

button {
    width: auto;
    margin: 0 auto;
    display: block;
}}