* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
}

body {
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    width: 90%;
    max-width: 1000px;
    margin: 0 auto;
    padding: 15px;
}

header {
    background: #2c3e50;
    color: white;
    padding: 15px 0;
    text-align: center;
}

header h1 {
    margin-bottom: 12px;
    font-size: 3.5rem;
}

nav {
    background: #34495e;
    padding: 10px 0;
}

nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
}

nav li {
    margin: 0 15px;
    position: relative;
}

/* Add separators between nav items */
nav li:not(:last-child)::after {
    content: "|";
    position: absolute;
    right: -18px;
    top: 0;
    color: rgba(255, 255, 255, 0.5);
}

nav a {
    color: white;
    text-decoration: none;
    padding: 5px 10px;
    transition: all 0.3s ease;
}

nav a:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

section {
    background: white;
    margin: 20px 0;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}


ul,ol {
    padding-left: 25px;
}​


h2 {
    color: #2c3e50;
    margin-bottom: 15px;
    padding-bottom: 5px;
    border-bottom: 2px solid #eee;
}

.topic {
    margin: 15px 0;
}

.topic h3 {
    color: #3498db;
}

.resources {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.resource {
    flex: 1;
    min-width: 250px;
    background: #eaf2f8;
    padding: 15px;
    border-radius: 5px;
}

footer {
    text-align: center;
    padding: 20px;
    background: #2c3e50;
    color: white;
    margin-top: 20px;
}

@media (max-width: 600px) {
    nav ul {
        flex-direction: column;
        align-items: center;
    }
    
    nav li {
        margin: 5px 0;
    }
    
    .resources {
        flex-direction: column;
    }
}