body {
    font-family: Arial, sans-serif;
    background-image: url('back.jpg') ;
    background-attachment: fixed;
    background-repeat: cover;
    margin: 0;
    padding: 20px;
    
}

.container {
    max-width: 600px;
    margin: auto;
    background: white;
    padding: 30px;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(1, 1, 1, 0.6);
}

h1 {
    text-align: center;
}

label {
    display: block;
    margin: 10px 0 5px;
}

input {
    width: 100%;
    padding: 10px;
    margin-bottom: 20px;
}

button {
    width: 100%;
    padding: 10px;
    background-color: #28a745;
    color: white;
    border: none;
    border-radius: 15px;
    cursor: pointer;
}

button:hover {
    background-color: #218838;
}

.result {
    margin-top: 20px;
    font-size: 1.2em;
    text-align: center;
}