body {
            background-color: #1e2a47;
            color: #fff;
            font-family: 'Roboto', sans-serif;
        }
        .navbar {
            background-color: #3498db;
        }
        .navbar img {
            height: 40px;
            margin-right: 10px;
        }
        .navbar-brand {
            font-size: 1.75rem;
            color: #fff;
            font-weight: 700;
        }
        .login-container {
            max-width: 400px;
            margin: 100px auto;
            background-color: #273c75;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
        }
        .login-container .form-control {
            background-color: #34495e;
            color: #fff;
            border: none;
        }
        .login-container .form-control:focus {
            border-color: #3498db;
            box-shadow: 0 0 5px rgba(52, 152, 219, 0.5);
        }
        .login-container button {
            background-color: #3498db;
            color: #fff;
            font-weight: 700;
        }
        .login-container button:hover {
            background-color: #2980b9;
        }
        .login-container .form-group {
            margin-bottom: 20px;
        }
        @media (max-width: 767px) {
            .navbar-brand {
                font-size: 1.25rem;
                text-align: center;
            }
            .navbar img {
                height: 30px;
            }
        }