body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: #007bff;
            color: #fff;
            margin: 0;
            padding: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            height: 100vh;
        }
        .container {
            max-width: 800px;
            width: 100%;
            background-color: #ffffff;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        h2 {
            text-align: center;
            color: #007bff;
            font-weight: bold;
            font-style: italic;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
        }
        .form-horizontal .form-group {
            margin-right: 0;
            margin-left: 0;
        }
        .obs {
            margin-top: 10px;
            font-style: italic;
            color: #888;
        }
        .form-control {
            border-radius: 5px;
            box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
        }
        .control-label {
            color: #007bff;
        }
        .btn-clear {
            background-color: #dc3545;
            color: #fff;
            margin-top: 15px;
            border: none;
            padding: 10px 20px;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
        }
        .btn-clear:hover {
            background-color: #c82333;
        }
        .btn-clear i {
            margin-right: 8px;
        }
        .button-container {
            text-align: center;
        }