body {
    background: #f5f7fa;
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 400px;
    margin: 80px auto;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.08);
    padding: 32px;
    text-align: center;
}

h1 {
    margin-bottom: 24px;
    color: #333;
    font-size: 2rem;
}

.input-box {
    width: 100%;
    height: 120px;
    padding: 16px;
    font-size: 1rem;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    margin-bottom: 24px;
    resize: none;
    box-sizing: border-box;
}

.submit-btn {
    background: #2563eb;
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 12px 32px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s;
}

.submit-btn:hover {
    background: #1e40af;
}

.description {
    margin-top: 24px;
    color: #6b7280;
    line-height: 1.5;
}