body {
    font-family: Arial, sans-serif;
    background: #f4f6f9;
    margin: 0;
    padding: 0;
}

.container {
    width: 500px;
    margin: 80px auto;
    background: #ffffff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

h2 {
    text-align: center;
    margin-bottom: 20px;
}

form {
    display: flex;
    gap: 10px;
}

input[type="text"] {
    flex: 1;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    padding: 10px 20px;
    border: none;
    background: #007bff;
    color: #fff;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background: #0056b3;
}

.result {
    margin-top: 25px;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    text-align: left;
    background: #f0f0f0;
    padding: 8px;
    width: 40%;
}

td {
    padding: 8px;
    border-bottom: 1px solid #ddd;
}

.error {
    margin-top: 20px;
    color: red;
    text-align: center;
}