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

body {
  background-color: #f8f8ff;
  display: grid;
  grid-template-columns: 100%;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
  font-family: "Roboto";
}

main {
  grid-row: 2;
  grid-column: 1;
}

h2 {
  text-align: center;
  padding-bottom: 1em;
  padding-top: 1em;
}

/* HEADER */
header {
  background-color: #00205B;
  color: #fff;
  display: flex;
  justify-content: space-between; /* align items to left and right */
  align-items: center; /* vertically aligns items */
  padding: 0 20px;
  height: 80px;
  width: 100%;
  grid-row: 1;
  grid-column: 1;
}

.nav-links {
  list-style-type: none;
  display: flex;
}

/* Hide nav links by default on smaller screens */
.nav-links {
  display: none;
}

.nav-links li {
  margin: 0 15px;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  background-color: #00205B;
  color: #fff;
}

.nav-links a {
  text-decoration: none;
  color: #fff;
  font-size: 1.2rem;
}

.hamburger {
  display: flex;
  flex-direction: column;
  cursor: pointer;
}

.hamburger span {
  height: 3px;
  width: 25px;
  background-color: #fff;
  margin: 4px;
  border-radius: 5px;
}

/* Show nav-links when in desktop view */
@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
  .hamburger {
    display: none;
  }
}

/* Show nav links in mobile view when active */
.nav-links.active {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 70px;
  right: 10px;
  background-color: #00205B;
  padding: 10px;
  border-radius: 8px;
}

h1 {
  font-size: 1.7rem;
  padding-bottom: 1em;
}

/* INTRO */
#tribute-info {
  text-indent: 2em;
  padding: 0 1em 1em 1em;
}

#intro {
  width: 95%;
  height: auto;
  margin: 3em auto;
  background-color: #fff;
  padding: 10px;
  border-radius: 5px;
  box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.1), 0 4px 8px 0 rgba(0, 0, 0, 0.1);
}

/* INTERESTING FACTS */
#interesting-facts {
  width: 95%;
  height: auto;
  background-color: #fff;
  margin: 3em auto;
  padding: 10px;
  border-radius: 5px;
  box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.1), 0 4px 8px 0 rgba(0, 0, 0, 0.1);
}

#interesting-facts ul {
  padding: 0 1em 1em 1em;
  margin: 0 auto;
}

.fact-style {
  padding: 0 1em 1em 1em;
}

#interesting-facts a {
  padding: 2em auto;
  text-align: center;
  height: auto;
  width: 100%;
  margin: 0 auto;
  color: #474e5d;
  display: block;
}

#tribute-link:hover, #tribute-link:active {
  color: #8fbc8f;
  font-weight: medium;
  font-size: 1.1em;
}

/* GALLERY */
#gallery {
 margin: 0 auto;
 width: 95%;
 padding: 0;
 background-color: #fff;
 border-radius: 5px;
 box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.1), 0 4px 8px 0 rgba(0, 0, 0, 0.1);
}

#gallery a:hover, #gallery a:active {
  color: #8fbc8f;
  font-weight: medium;
  font-size: 1.1em;
}

.horizontal-scroll {
  display: flex;
  align-items: center;
  width: 95%;
  margin: 0 auto 20px auto;
  overflow-x: hidden; /*auto enables horizontal scroll. hidden prevents accidental scroll*/
  position: relative;
}

.horizontal-scroll .content {
  display: flex;
  transition: transform 0.3s ease;
  overflow-x: auto; /*allow scrolling if buttons don't work*/
  scroll-behavior: smooth;
  box-shadow: none;
}

.horizontal-scroll .img-container {
  flex: 0 0 auto; /*prevents item from shrinking or stretching*/
  text-align: center;
  width: auto;
  text-align: center;
}

.scroll-left .scroll-right {
  position: absolute;
  transform: translateY(-50);
  cursor: pointer;
  z-index: 10;
  background-color: #fff;
}

#gallery button {
  border: solid 1px #000;
  border-radius: 5px;
  font-size: 1.6rem;
  height: 100px;
  width: 30px;
  text-align: center;
}

.scroll-left {
  left: 8px;
}

.scroll-right {
  right: 8px;
}

.img-container {
  display: grid;
  grid-template-rows: 1fr 1fr;
  flex-direction: row;
  flex-wrap: no-wrap;
  justify-content: center;
  align-items: center;
  max-width: 1400px;
  padding: 0 10px;
  max-height: 450px;
  height: auto;
}

.img-container img {
  width: 100%;
  max-width: 310px;
  height: 260px;
  object-fit: cover;
  border-radius: 10px;
  grid-row: 1;
}

.img-container a {
  text-decoration: none;
  color: navy;
}

figcaption {
  max-width: 300px;
  height: 50%;
  grid-row: 2;
  margin: 0 auto;
  padding: 10px 0;
}

blockqoute {
  font-style: italic;
}

/* TIMELINE */
#timeline {
  padding-bottom: 2em;
}

#timeline h2{
  background-color: #fff;
  border-radius: 5px;
  width: 95%;
  margin: 2em auto 2em auto;
  box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.1), 0 4px 8px 0 rgba(0, 0, 0, 0.1);
}

#timeline div h3 {
  padding-bottom: 0.5em;
  border-bottom: 1px solid #C5B783;
}

#timeline div p {
  padding-top: 0.25em;
  padding: 0.25em 0;
  text-indent: em;
}

/* The actual timeline (the vertical ruler) */
.timeline {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
}

/* The actual timeline (the vertical ruler) */
.timeline::after {
  content: '';
  position: absolute;
  width: 6px;
  background-color: #00205B;
  top: 0;
  bottom: 0;
  left: 50%;
  margin-left: -3px;
  border-radius: 10px;
}

/* Container around content */
.container {
  padding: 10px 40px;
  position: relative;
  background-color: inherit;
  width: 50%;
}

/* The circles on the timeline */
.container::after {
  content: '';
  position: absolute;
  width: 25px;
  height: 25px;
  right: -17px;
  background-color: white;
  top: 15px;
  border-radius: 50%;
  z-index: 1;
  box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.1), 0 4px 8px 0 rgba(0, 0, 0, 0.1);
}

/* Place the container to the left */
.left {
  left: 0;
}

.right {
  left: 50%;
}

/* Add arrows to the left container (pointing right) */
.left::before {
  content: " ";
  height: 0;
  position: absolute;
  top: 22px;
  width: 0;
  z-index: 1;
  right: 30px;
  border: medium solid white;
  border-width: 10px 0 10px 10px;
  border-color: transparent transparent transparent white;
}

.left::after {
  border: 6px solid #f08080;
  height: 27px;
  width: 27px;
  right: -20px;
}

/* Add arrows to the right container (pointing left) */
.right::before {
  content: " ";
  height: 0;
  position: absolute;
  top: 22px;
  width: 0;
  z-index: 1;
  left: 30px;
  border: medium solid white;
  border-width: 10px 10px 10px 0;
  border-color: transparent white transparent transparent;
}

/* Fix the circle for containers on the right side */
.right::after {
  left: -16px;
  border: 4px solid #00205B;
}

/* The actual content */
.content {
  padding: 20px 30px;
  background-color: white;
  position: relative;
  border-radius: 6px;
  box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.1), 0 4px 8px 0 rgba(0, 0, 0, 0.1);
}

#timeline .left .content{
  background-image: url('circit.png');
  background-size: cover;
}

#timeline .right .content {
  background-image: url('map.png');
  background-size: cover;
  background-position: bottom 75% center;
  width: 75%;
}

/* Media queries - Responsive timeline on screens less than 600px wide */
@media screen and (max-width: 600px) {
/* Place the timelime to the left */
  .timeline::after {
    left: 31px;
  }

/* Full-width containers */
  .container {
    width: 100%;
    padding-left: 70px;
    padding-right: 25px;
  }
  
  #timeline .right .content {
    width: 100%;
  }

/* Make sure that all arrows are pointing leftwards */
  .container::before {
    left: 60px;
    border: medium solid white;
    border-width: 10px 10px 10px 0;
    border-color: transparent white transparent transparent;
  }
  
  /* Make sure all circles are at the same spot */
  .left::after, .right::after {
    left: 15px;
  }

/* Make all right containers behave like the left ones */
  .right {
    left: 0%;
  }
}

/* TODO QUIZ 

/* FOOTER & RESOURCES */
footer {
  background-color: #00205B;
  line-height: 2;
  margin: 0;
  padding: 0;
  bottom: 0;
  grid-row: 3;
  grid-column: 1;
  width: 100%;
}

footer a, footer p{
  text-decoration: none;
  color: white;
}

footer a:hover, footer a:active {
  color: #8fbc8f;
  background-color: #00205B;
  font-size: 1.1em;
  font-weight: medium;
}

li span {
  color: #a1a1a1;
  font-size: 0.8em;
  font-style: italic;
}

footer li {
  list-style-type: none;
}

footer h3 {
  color: #C5B783;
  text-align: center;
  letter-spacing: 4px;
  font-size: 1.8rem;
  padding: 5px;
  text-decoration: underline;
}

#footercontainer {
  padding: 20px;
  margin: 0 auto;
}