@import url("https://fonts.googleapis.com/css2?family=Roboto&display=swap");

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    margin: 0.5rem;
    font-family: "Roboto", sans-serif;
    background-color: #fff;
    color: #333;
}

header {
    text-align: center;
}

nav {
    border: 2px solid #333;
    border-radius: 2rem;
    margin: 0 auto 1rem;
    max-width: 400px;
    font-size: 2rem;
    line-height: 4rem;
}

h1 {
    padding: 1rem;
    background: gold;
    border-radius: 2rem 2rem 0 0;
}

h2 {
    font-size: 2rem;
}

h2, h3, h4, h5, h6 {
    padding: 1rem;
}

article {
    margin: 2rem;
}

nav ul {
    list-style-type: none;
}

nav li {
    border-top: 1px solid #333;
}

nav li a {
    display: block;
}

nav li a, nav li a:visited {
    text-decoration: none;
    color: #333;
}

nav li a:hover, nav li a:focus {
    background: #333;
    color: whitesmoke;
}

nav li:last-child a {
    border-radius: 0 0 2rem 2rem;
}

table, tr, th, td, caption {
    border: 1px solid #000;
    font-family: 'Courier New' Courier monospace;
    border-collapse: collapse;
    padding: 0.5rem 5rem 0.5rem 1rem;
}

ol li {
    margin: 0 0 0 2rem;
}

a, a:visited {
    /* cursor: pointer; */
    color: hsl(0, 0%, 20%);
}

a:hover, a:focus {
    color: hsl(0, 0%, 20%, .7);
}

a:active {
    color: dodgerblue;
}

#pwd table {
    margin: 0 auto 1rem;
}

#pwd h2 {
    text-align: center;
}