body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

input[type="text"], input[type="number"] {
    padding: 10px 15px;
    margin: 5px;
    border: 1px solid #ccc;
    border-radius: 5px;
    width: 200px;
    font-size: 14px;
    transition: border-color 0.3s, box-shadow 0.3s;
}

input[type="text"]:focus, input[type="number"]:focus {
    border-color: #4CAF50;
    box-shadow: 0 0 5px rgba(76, 175, 80, 0.5);
    outline: none;
}

button {
    padding: 10px 20px;
    margin: 5px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.3s;
}

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

table {
    border-collapse: collapse;
    width: 90%;
    margin-top: 30px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

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

th {
    background-color: #4CAF50;
    color: white;
}

tr:nth-child(even) {
    background-color: #f2f2f2;
}

tr:hover {
    background-color: #ddd;
}