body {
  margin: 0;
  overflow: visible;
  overflow-x: hidden;
}
h1 {
  color: white;
}
p {
  color: black;
}
.header {
  background-color: #333;
  color: white;
  text-align: center;
  margin: 0;
  padding: 16px;
  color: white;
}
html {
  scroll-behavior: smooth;
}


.world-imperialism-map-parallax {
  /* The image used */
  background-image: url("worldImperialismMap.png");

  /* Set a specific height */
  height: 100vh;
  /* Create the parallax scrolling effect */
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}
#creator-names {
  margin: 10px 10px;
  list-style-type: none;
  background-color: white;
  line-height: 40px;
  display:block;
}

.nav-ul{
  position: -webkit-sticky; /* Safari */
  position: sticky;
  top: 0;
}
.top-ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: #333;
}

.top-ul li {
  float: left;
}

.top-ul li a {
  display: block;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

.top-ul li a:hover {
  background-color: #111;
}

.active {
  background-color: #4CAF50;
}


.side-ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  width: 25%;
  background-color: #f1f1f1;
  height: 100vh;
  overflow: auto;
}
.side-ul li a {
  display: block;
  color: #000;
  padding: 8px 64px;
  text-decoration: none;
}


.side-ul li a.active {
  background-color: #04AA6D;
  color: white;
}

.side-ul li a:hover:not(.active) {
  background-color: #555;
  color: white;
}


.scroll-up-button {
  display: inline-block;
  padding: 8px 8px;
  font-size: 24px;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  outline: none;
  color: indigo;
  background-color: #ccc;
  border: none;
  border-radius: 15px;
  box-shadow: 0 9px #888;
}

.scroll-up-button:hover {background-color: #aaa}

.scroll-up-button:active {
  background-color: #999;
  box-shadow: 0 5px #555;
  transform: translateY(4px);
}

.button-63 {
  align-items: center;
  background-image: linear-gradient(144deg,#AF40FF, #5B42F3 50%,#00DDEB);
  border: 0;
  border-radius: 8px;
  box-shadow: rgba(151, 65, 252, 0.2) 0 15px 30px -5px;
  box-sizing: border-box;
  color: #FFFFFF;
  display: flex;
  font-family: Phantomsans, sans-serif;
  font-size: 20px;
  justify-content: center;
  line-height: 1em;
  max-width: 100%;
  min-width: 140px;
  padding: 19px 24px;
  text-decoration: none;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  white-space: nowrap;
  cursor: pointer;
}

.button-63:active, .button-63:hover {
  outline: 0;
}

@media (min-width: 768px) {
  .button-63 {
    font-size: 24px;
    min-width: 196px;
  }
}