body {
    background-color: #151515;
    font-family: Helvetica, Arial, sans-serif;
    color: white;
    margin: 0;
    padding: 0;
}

header {
    height: 60px;
    width: 100%;
    background-color: #2C2C2C;
    border-bottom: solid thin #202020;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
    position: fixed;
}

nav {
    width: 200px;
    background-color: #252525;
    border: solid thin #202020;
    position: fixed;
    top: 60px;
    bottom: 0;
    overflow-y: auto;
}

nav ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
}

nav li {
    padding: 1em;
    border-bottom: solid thin #202020;
}

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

nav a:hover {
    color: #9FCC6A;
}

main {
    margin-left: 200px;
    padding: 1em;
    padding-top: 70px;
}

section {
    max-width: 800px;
    margin: 0 auto;
}

h2 {
    color: #9FCC6A;
}