* {
    margin: 0;
    padding: 0;
}
body{
    font-family: Arial, sans-serif;
}

.grid_container {
    display: grid;
    grid-template-columns: max-content auto;
    grid-gap: 1em;
    height: 100vh;
}

nav {
    margin: 1em;
    border-radius: 1em;
    padding: 1em;
    box-shadow: 0 0 1em gray;
}

nav h2, nav h3 {
    margin-bottom: 0.5em;
    margin-top: 1em;
}

nav a {
    display: block;
    color: black;
    text-decoration: none;
    margin-left: 0.5em;
    transition: color 0.2s;
}
nav a:hover {
    color: blue;
}

#content>div>h2 {
    margin-top: 1em;
}

#content>div {
    display: none;
}
#content>div:target {
    display: block;
}

#content li {
    margin-left: 1em;
}