/* Reset some default styles */
body, h1, h2, h3, p, ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

/* Base styles */
body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f7f9;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
    padding: 20px;
}

/* Header styles */
header {
    background: #007bff;
    color: white;
    padding: 20px 0;
    text-align: center;
}

header h1 {
    margin-bottom: 10px;
    font-size: 2.5em;
}

/* Navigation styles */
nav {
    background: #0056b3;
    padding: 15px;
}

nav ul {
    display: flex;
    justify-content: center;
}

nav ul li {
    margin: 0 15px;
}

nav a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
}

nav a:hover {
    color: #ffd700;
}

/* Main content styles */
.main-content {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 20px;
}

.card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    flex: 1 0 calc(33.333% - 20px);
    padding: 20px;
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
}

.card h2 {
    color: #007bff;
}

.card p {
    margin: 10px 0;
}

/* Footer styles */
footer {
    background: #007bff;
    color: white;
    text-align: center;
    padding: 15px 0;
    margin-top: 20px;
}

/* Responsive styles */
@media (max-width: 768px) {
    .card {
        flex: 1 0 calc(50% - 20px);
    }
}

@media (max-width: 480px) {
    .card {
        flex: 1 0 100%;
    }
}