body {
font-family: system-ui, sans-serif;
margin: 0;
line-height: 1.6;
}

header {
background: #111;
color: white;
padding: 1rem;
}

nav a {
color: white;
margin-right: 1rem;
text-decoration: none;
}

main {
padding: 1rem;
}

.hero {
margin: 2rem 0;
}

article {
margin-bottom: 1.5rem;
}

footer {
background: #eee;
text-align: center;
padding: 1rem;
margin-top: 2rem;
}

/* Desktop layout */

@media (min-width: 768px) {

main {
max-width: 800px;
margin: auto;
}

nav {
float: right;
}

}