body {
    background-color: #f8f9fa;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

h3 {
    color: #343a40;
}

form {
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0px 3px 10px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-weight: bold;
}

button.btn {
    transition: background-color 0.3s ease;
}

button.btn:hover {
    opacity: 0.9;
}