.main {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #f5f6fa;
    margin: 0;
    padding: 0;
}
.container00 {
    max-width: 400px;
    margin: 40px auto;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    padding: 32px 24px;
}
.section h1 {
    text-align: center;
    color: #333;
    margin-bottom: 24px;
}
.section {
    margin-bottom: 32px;
}
.section h2 {
    font-size: 1.2em;
    color: #555;
    margin-bottom: 12px;
}
.section input[type="file"] {
    display: block;
    margin-bottom: 10px;
}
.section input[type="password"] {
    width: calc(100% - 24px);
    padding: 8px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
}
.section button {
    background: #007bff;
    color: #fff;
    border: none;
    padding: 10px 18px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
    transition: background 0.2s;
}
.section button:hover {
    background: #0056b3;
}
#msg {
    margin-top: 16px;
    color: #d9534f;
    text-align: center;
    min-height: 20px;
}