body {
    background-color: #f1f9ff; 
    color: #343a40;
    font-family: Arial, sans-serif;
}

.container {
    background-color: #ffffff;
    border: 1px solid #dee2e6;
    padding: 20px;
    margin: 20px auto;
    max-width: 800px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1, h2, h3 {
    color: #007bff;
}

button, .btn-primary {
    background-color: #007bff;
    border-color: #007bff;
    color: #ffffff;
}

button:hover, .btn-primary:hover {
    background-color: #0056b3;
    border-color: #0056b3;
}

.btn-success {
    background-color: #28a745;
    border-color: #28a745;
    color: #ffffff;
}

.btn-success:hover {
    background-color: #218838;
    border-color: #1e7e34;
}

.btn-warning {
    background-color: #ffc107;
    border-color: #ffc107;
    color: #212529;
}

.btn-warning:hover {
    background-color: #e0a800;
    border-color: #d39e00;
}

.btn-danger {
    background-color: #dc3545;
    border-color: #dc3545;
    color: #ffffff;
}

.btn-danger:hover {
    background-color: #c82333;
    border-color: #bd2130;
}

input, select, textarea {
    border: 1px solid #dee2e6;
    padding: 10px;
    width: 100%;
    box-sizing: border-box;
    margin-bottom: 15px;
}

input:focus, select:focus, textarea:focus {
    border-color: #007bff;
    outline: none;
}

.alert-success {
    background-color: #d4edda;
    border-color: #c3e6cb;
    color: #155724;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: #ffeeba;
    color: #856404;
}

.alert-danger {
    background-color: #f8d7da;
    border-color: #f5c6cb;
    color: #721c24;
}