body {
    font-family: Arial;
    margin: 40px;
    background: #f9f9f9;
}
input, textarea {
    width: 100%;
    margin: 8px 0;
    padding: 8px;
}
button {
    padding: 10px 20px;
}
.success { color: green; }
.error { color: red; }
table {
    width: 100%;
    background: white;
    border-collapse: collapse;
}
th, td {
    border: 1px solid #ccc;
    text-align: left;
}