body {
    font-family: Arial, sans-serif;
    background: #f9f9f9;
    margin: 0;
    padding: 0;
}
.container {
    width: 400px;
    margin: 40px auto;
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
h1, h2 {
    text-align: center;
    color: #333;
}
form {
    margin-bottom: 24px;
}
.form-group {
    margin-bottom: 16px;
}
label {
    display: block;
    margin-bottom: 6px;
    color: #555;
}
input[type="text"], input[type="email"] {
    width: 100%;
    padding: 8px;
    border: 1px solid #bbb;
    border-radius: 4px;
}
button {
    width: 100%;
    padding: 10px;
    background: #4caf50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}
button:hover {
    background: #388e3c;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
}
th, td {
    padding: 8px;
    border: 1px solid #ddd;
    text-align: left;
}
th {
    background: #f1f1f1;
}
@media (max-width: 500px) {
    .container {
        width: 95%;
        padding: 16px;
    }
    h1, h2 {
        font-size: 1.3em;
    }
    button {
        font-size: 15px;
        padding: 8px;
    }
    th, td {
        padding: 6px;
        font-size: 0.95em;
    }
    form, table {
        font-size: 0.98em;
    }
}