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

h1, h2, h3 {
    text-align: center;
}

form {
    text-align: center;
    margin-bottom: 30px;
}

input[type=text], input[type=submit] {
    padding: 10px;
    margin: 5px;
    font-size: 16px;
}

table {
    margin: 0 auto;
    border-collapse: collapse;
    width: 50%;
}

table, th, td {
    border: 1px solid #000;
    padding: 10px;
    text-align: left;
}