body {
    background-color: lightblue;
    font-family: Arial, Helvetica, sans-serif;
    margin: 1.25rem;
    padding: 0.625rem;
}

header {
    background-color: darkblue;
    color: white;
    padding: 0.9375rem;
    text-align: center;
    border: 0.1875rem solid blue;
}

nav {
    background-color: gray;
    padding: 0.625rem;
    margin-top: 0.625rem;
    margin-bottom: 0.625rem;
}

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

nav li {
    display: inline;
    margin-right: 0.9375rem;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

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

main {
    background-color: white;
    padding: 1.25rem;
    margin: 0.9375rem;
    border: 0.125rem solid black;
}

h1 {
    color: red;
    font-size: 2em;
    text-align: center;
    text-transform: uppercase;
    text-shadow: 2px 2px gray;
}

h2 {
    color: green;
    font-size: 1.5em;
    text-shadow: 1px 1px lightgray;
}

h3 {
    color: orange;
    font-size: 1.2em;
}

p {
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: 0.625rem;
}

ul {
    list-style-type: square;
    margin-left: 1.25rem;
}

ol {
    list-style-type: decimal;
    margin-left: 1.25rem;
}

li {
    margin-bottom: 0.3125rem;
}

a {
    color: blue;
    font-weight: bold;
}

a:hover {
    color: red;
}

a:visited {
    color: purple;
}

article {
    background-color: lightyellow;
    padding: 0.9375rem;
    margin-bottom: 1.25rem;
    border: 0.125rem solid orange;
}

section {
    margin-bottom: 0.9375rem;
    padding: 0.625rem;
}

time {
    color: brown;
    font-style: italic;
    font-weight: bold;
}

img {
    border: 0.1875rem solid black;
    width: 25rem;
    margin: 0.625rem;
}

figure {
    text-align: center;
    margin: 1.25rem;
}

figcaption {
    font-style: italic;
    color: gray;
}

blockquote {
    background-color: lightgray;
    border-left: 0.3125rem solid green;
    padding: 0.625rem;
    margin: 1.25rem;
    font-style: italic;
    font-size: 1.125rem;
}

form {
    background-color: lightgreen;
    padding: 0.9375rem;
    border: 0.125rem solid darkgreen;
}

label {
    font-weight: bold;
    color: darkblue;
}

input[type="text"] {
    width: 18.75rem;
    padding: 0.3125rem;
    border: 0.125rem solid blue;
    margin-bottom: 0.625rem;
}

input[type="email"] {
    width: 18.75rem;
    padding: 0.3125rem;
    border: 0.125rem solid blue;
    margin-bottom: 0.625rem;
}

textarea {
    width: 25rem;
    height: 6.25rem;
    padding: 0.3125rem;
    border: 0.125rem solid blue;
}

input[type="submit"] {
    background-color: orange;
    color: white;
    padding: 0.625rem 1.25rem;
    border: none;
    font-weight: bold;
    cursor: pointer;
}

input[type="submit"]:hover {
    background-color: darkorange;
}

footer {
    background-color: darkblue;
    color: white;
    text-align: center;
    padding: 0.9375rem;
    margin-top: 1.25rem;
    border: 0.1875rem solid blue;
}

.highlight {
    background-color: yellow;
    padding: 0.125rem;
    font-weight: bold;
}

.intro {
    font-size: 1.125rem;
    color: darkblue;
}

#top {
    margin-top: 0;
}

#intro {
    background-color: lightcyan;
    padding: 0.9375rem;
    border: 0.125rem dashed blue;
}

dl {
    margin-left: 1.25rem;
}

dt {
    font-weight: bold;
    color: darkred;
    margin-top: 0.625rem;
}

dd {
    margin-left: 1.25rem;
    color: black;
}

.back-to-top {
    color: white;
    background-color: green;
    padding: 0.5rem;
    text-decoration: none;
    font-weight: bold;
}

.back-to-top:hover {
    background-color: darkgreen;
}

article h3 {
    color: red;
}

article ul li {
    color: darkblue;
}

section ul {
    list-style-type: circle;
}