html, body {
    height: 100%;
    margin: 0;
}

body {
    display: grid;
    height: 100vh;
    width: 100vw;
    grid-template-columns: 20% 20% 20% 20% 20%;
    grid-template-rows: 20% 20% 20% 20% 20%;
    background-color: #333;
    font-family: Arial, Helvetica, sans-serif;
    color: #fff;
}

header {
    grid-column: 1 / 6;
    grid-row-start: 1;
}

nav {
    display: flex;
    justify-content: space-around;
    align-items: center;
    height: 100%;
}

ul {
    display: flex;
    padding-left: 0;
    list-style: none;
}

.spaced {
    margin-left: 2rem;
}

nav a {
    font-size: 19px;
    text-decoration: none;
}

nav a:hover {
    text-decoration: underline;
}

#message {
    display: flex;
    grid-row: 2 / 3;
    grid-column: 2 / 5;
    align-items: flex-start;
}

main {
    display: flex;
    justify-content: center;
    align-items: center;
    grid-column: 1 / 6;
    grid-row: 2 / 5;
}

footer {
    display: flex;
    justify-content: center;
    align-items: end;
    grid-column-start: 3;
    grid-row-start: 5;   
}

footer div p {
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
}

footer div p span {
    color: #fff;
}

a {
    color: #fff;
}