* {
    box-sizing: border-box;
    font-family: 'Roboto', sans-serif;
}

body {
    margin: 0;
    padding: 0;
}

/* Nav bar */

nav {
    background: #ececec;
    margin: 0;
    box-shadow: 0 0 8px 1px #888888ef;
    height: 60px;
}

nav ul {
    display: flex;
    margin: 0;
    padding: 20px 40px;
}

nav ul li {
    list-style: none;
}

nav ul .expand {
    flex-grow: 1
}

nav ul li a {
    text-decoration: none;
    color: black;
}

/* 404 page */
.page404 {
    display: grid;
    place-items: center;
    height: calc(100vh - 60px);
    text-align: center;
}
.page404 h1 {
    font-size: 10em;
    margin: 0;
}
.page404 h2 {
    font-size: 5em;
    margin: 0;
    margin-bottom: 0.3em;
} 
.page404 div.description {
    font-size: 1.5em;
}