body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    padding: 20px;
}

h1 {
    color: #333;
}

form {
    margin-bottom: 20px;
}

input[type="text"],
input[type="number"] {
    padding: 10px;
    margin: 5px;
    width: 200px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    padding: 10px 20px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

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

table {
    width: 100%;
    max-width: 800px;
    border-collapse: collapse;
    margin: 20px 0;
}

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

th {
    background-color: #f2f2f2;
}

.round-odd {
    background-color: #f9f9f9;
}

.round-even {
    background-color: #e6e6e6;
}

@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    table {
        width: 100%;
    }

    th,
    td {
        padding: 8px;
    }
}