:root {
  --green: #0db5ba;
  --orange: #FF4500;
  --brown: #F6E7D2;
  --black: #000000;
  --white: #FFF;
}

* {
  margin: 0;
  padding: 0;
}

*,
*::before,
*::after {
  box-sizing: inherit;
}

html {
  box-sizing: border-box;
  font-size: 62.5%;
  scroll-behaviour: smooth;
}

body {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: 3rem;
  line-height: 1.5;
  text-align: center;
  color: var(--black);
  margin: 0;
}

#grid {
  display: grid;
  grid-template-columns: 25% 75%;
}

#main {
  padding: 30px;
  background: #F6E7D2;
}

h1 {
  font-size: 5rem;
}

#tagline {
  padding-bottom: 3rem;
}

h2 {
  font-size: 3.25rem;
}

a {
  color: #0db5ba;
}

a:hover {
  color: #FF4500;
}

img {
  max-width: 60%;
  display: block;
  height: auto;
  margin: 0 auto;
  border-radius: 5px;
}

#img-div {
  background: white;
  padding: 10px;
  margin: 0;
  border-radius: 5px;
  border: solid black 1px;
  box-shadow: 2px 2px 10px var(--black); 
}

#img-caption {
  margin: 15px 0 5px 0;
}

#headline {
  margin: 50px 0;
  text-align: center;
}

ul {
  max-width: 550px;
  margin: 0 auto 50px auto;
  text-align: left;
  line-height: 1.6;
}

.timeline {
  margin: 16px 0;
}

blockquote {
  font-style: italic;
  max-width: 545px;
  margin: 0 auto 50px auto;
  text-align: left;
}

nav {
  background: var(--brown);
}

#header {
  font-size: 3rem;
  padding: 1.5rem;
  border: solid black 1px;
  border-radius: 5px;
  margin-left: 2rem;
  margin-right: 2rem;
  margin-top: 2rem;
  background: var(--white);
}

.books {
  font-size: 3rem;
  color: var(--white);
  padding: 1.5rem;
  border: solid black 1px;
  list-style: none;
  margin-left: 2rem;
  margin-right: 2rem;
  background: var(--green);
  border-radius: 5px;
}

.books:hover {
  background: var(--orange);
}

footer {
  height: 30px;
  background: var(--orange);
}