body {
    height: 100vh;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

table {
    border: 1px solid black;
    width: 100%;
}

th, td {
    padding: 1rem;
}