body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 20px;
}

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

form {
    max-width: 300px;
    margin: 0 auto;
    background: rgb(255, 255, 255);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

.number-input {
    width: 92.5%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 4px;
}

.submit-btn {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 10px;
    cursor: pointer;
    width: 100%;
    border-radius: 4px;
    font-size: 16px;
}

.submit-btn:hover {
    background-color: #45a049;
}

a {
    display: inline-block;
    margin-bottom: 10px;
    text-decoration: none;
    color: #4CAF50;
    font-weight: bold;
}

a:hover {
    text-decoration: underline;
}

table {
    width: 60%;
    margin: 0 auto;
    border-collapse: collapse;
    background: white;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

th, td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: center;
}

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

tr:nth-child(even) {
    background-color: #f9f9f9;
}

tr:hover {
    background-color: #f1f1f1;
}