body {
    font-family: Arial, sans-serif;
    background: #f6f6f6;
    text-align: center;
    margin: 0;
    padding: 0;
}

h1 {
    background: #004080;
    color: white;
    padding: 15px;
    margin-bottom: 20px;
}

table {
    border-collapse: collapse;
    width: 90%;
    margin: auto;
    background: white;
}

th, td {
    border: 1px solid #ccc;
    padding: 8px;
}

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

a.btn, input[type=submit] {
    background: #004080;
    color: white;
    padding: 8px 12px;
    border-radius: 8px;
    text-decoration: none;
}

form {
    background: white;
    padding: 20px;
    width: 400px;
    margin: auto;
    border-radius: 10px;
}

input, textarea, select {
    width: 90%;
    margin: 5px 0;
    padding: 6px;
    border-radius: 6px;
    border: 1px solid #ccc;
}