body {
    font-family: 'Arial', sans-serif;
    background-color: #f4f4f4;
    color: #333;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 600px;
    margin: 50px auto;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #4CAF50;
}

h2 {
    color: #4CAF50;
    margin-top: 30px;
}

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

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

input, textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

button {
    display: inline-block;
    background-color: #4CAF50;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-align: center;
}

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

#result {
    margin-top: 40px;
}

table {
    width: 90%;
    border-collapse: collapse;
    margin-top: 30px;
    margin-left: 20px;
    margin-bottom: 20px;
    margin-right: 20px;
}

th, td {
    padding: 10px;
    border: 1px solid #ddd;
    text-align: left;
}

th {
    background-color: #f2f2f2;
}

.hidden {
    display: none;
}

@media (max-width: 600px) {
    .container {
        padding: 15px;
    }

    button {
        width: 100%;
        padding: 15px;
    }
}