* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

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

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

header h2 {
    font-size: 1.5rem;
    font-weight: normal;
    margin-bottom: 0.5rem;
}

header p {
    margin-bottom: 0.3rem;
}

nav {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #34495e;
}

nav a {
    color: #3498db;
    text-decoration: none;
    padding: 0 0.5rem;
}

nav a:hover {
    color: #5dade2;
    text-decoration: underline;
}

main {
    max-width: 900px;
    margin: 2rem auto;
    padding: 2rem;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

section {
    margin-bottom: 2.5rem;
}

section:last-child {
    margin-bottom: 0;
}

section h2 {
    color: #2c3e50;
    font-size: 1.8rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid #3498db;
}

section p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

ul {
    list-style-position: inside;
    padding-left: 1rem;
}

li {
    margin-bottom: 0.8rem;
}

a {
    color: #2980b9;
    text-decoration: none;
}

a:hover {
    color: #3498db;
    text-decoration: underline;
}

footer {
    text-align: center;
    padding: 1.5rem;
    color: #7f8c8d;
    background-color: #ecf0f1;
    margin-top: 2rem;
}