body {
    font-family: Arial, sans-serif;
    margin: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

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

th {
    background-color: #f2f2f2;
}

button {
    padding: 10px 15px;
    margin-top: 10px;
    cursor: pointer;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
}

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

input[type="number"], input[type="text"] {
    padding: 10px;
    width: 100%;
    margin-bottom: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

h1 {
    color: #333; 
    text-align: center;
}

h3 {
    color: #4CAF50;
} 

footer{ 
    text-align: center;
    font-size: 11px;
}