body {
            background-color: #007bff;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
        }
        .container {
            background-color: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
            max-width: 600px;
            width: 100%;
        }
        h1 {
            text-align: center;
            margin-bottom: 20px;
        }
        .legenda {
            font-size: 1rem;
            font-weight: bold;
            margin-bottom: 5px;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }
        .btn-classic, .btn-default {
            padding: 10px 20px;
            font-size: 16px;
            border-radius: 5px;
            cursor: pointer;
            transition: background-color 0.3s;
        }
        .btn-classic {
            background-color: #007bff;
            color: white;
            border: none;
        }
        .btn-classic:hover {
            background-color: #0056b3;
        }
        .btn-default {
            background-color: #f8f9fa;
            color: #333;
            border: none;
        }
        .btn-default:hover {
            background-color: #e2e6ea;
        }
        .form-control {
            resize: none;
            margin-bottom: 20px;
        }
        .btn i {
            margin-right: 5px;
        }