:root {
    --white: #FAF9F6;
    --tan: #eadbc8;
    --black: #424242;
    --green: #a2dba7;
    --dark-green: #145214;
}

body {
    background: var(--white);
    font-family: 'Monaco', sans-serif;
    margin: 30px auto 0 auto;
    color: var(--black);
}

header {
    margin-bottom: 70px;
}

h1, h2 {
    font-family: 'Garamond', 'Georgia', serif;
    margin: 0 auto;
    text-align: center;
    color: var(--dark-green);
}

h1 {
    font-size: 50px;
}

h2 {
    font-size: 50px;
}

h3 {
    font-family: 'Garamond', 'Georgia', serif;
    margin: 0 auto;
    font-size: 40px;
    color: var(--black);
}

a {
    text-decoration: none;
    color: var(--black);
}

a:hover {
    color: var(--tan);
}

nav li {
    display: inline-block;
    padding: 0 20px;
}

nav li a {
    text-decoration: none;
    
    color: var(--black);
    font-size: 20px;
}

nav li a:hover {
    color: var(--tan);
}

nav ul {
    list-style-type: none;
    padding: 0;
    text-align: center;
    margin: 0 auto;
}

.lessons, .tutorial-row {
    display: flex;
    gap: 25px;
    width: 70%;
    margin: 35px auto;
}

.tutorial-row-single {
    width: 70%;
    margin: 35px auto;
}

#about {
    width: 70%;
    margin: 35px auto;
    text-align: center;
}

.definition, .lesson {
    background-color: var(--tan);
    border-bottom-right-radius: 20px;
    border-top-left-radius: 20px;
    padding: 30px;
    box-shadow: 5px 5px 10px var(--black);
    flex-grow: 1;
    flex-basis: 0;
}

.definition p {
    margin-bottom: 30px;
}

.button-link {
    border: 1px solid var(--black);
    border-radius: 20px;
    padding: 8px 10px;
    text-decoration: none;
    color: var(--black);
}

.button-link:hover {
    color: var(--tan);
    background-color: var(--black);
}

.lesson {
    box-shadow: none;
}

.lesson#back-top, .lesson#back-bottom, .lesson#back {
    box-shadow: none;
    background-color: var(--white);
    text-align: right;
}

.lesson#back-top:hover, .lesson#back-bottom:hover, .lesson#back:hover {
    text-shadow: 5px 5px 10px var(--black);
}

.lesson:hover {
    box-shadow: 5px 5px 10px var(--black);
}

.lessons a {
    text-decoration: none;
}

.digital-divide-title {
    font-family: 'Monaco', sans-serif;
    font-size: 20px;
    margin: 20px 0;
}

h4 {
    font-family: 'Garamond', 'Georgia', serif;
    font-size: 25px;
    padding: 0;
    margin: 0;
    color: var(--black);
}

h4.access {
    width: 70%;
    margin: 20px auto;
    font-size: 20px;
    font-family: 'Monaco', sans-serif;
}

#zoom, #sources, #ettiquette {
    width: 70%;
    margin: 35px auto;
}

img {
    width: 100%;
}

.img-caption {
    flex-grow: 1;
    flex-basis: 0;
}

.link:hover {
    color: var(--tan);
}

.tutorial-title {
    font-family: 'Monaco', sans-serif;
    font-size: 30px;
    margin: 20px 0;
    text-align: center;
}

.access-divide {
    width: 70%;
    margin: 20px auto;
}

#pi-tutorial, #pw-tutorial, #virus-tutorial {
    width:70%;
    margin: 0 auto;
}

#pw-tutorial h4, #virus-tutorial h4 {
    font-size: 20px;
    font-family: 'Monaco', sans-serif;
}