@import url("https://fonts.googleapis.com/css?family=Signika+Negative:300,400&display=swap");

.backBtn {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 9;
  width: 25px;
  background-color: rgb(255, 255, 255);
  border-radius: 100%;
  padding: 5px;
  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.3);
  transition: background-color 0.2s;
}

.backBtn:hover {
  background-color: rgb(240, 240, 240);
}

html,
body,
section.horizontal {
  overflow-x: hidden;
}

body {
  font-family: "Signika Negative", sans-serif;
  font-weight: 300;

  margin: 0;
  padding: 0;
}

h1 {
  margin: 0;
  padding: 50px 0 0 50px;
}

p {
  margin: 0;
  padding: 50px 0 50px 50px;
}

section {
  width: 100%;
  height: 100%;
  position: relative;
}

section:nth-of-type(odd) {
  background-color: #f0f0f0;
}

section:nth-of-type(even) {
  background-color: #ffffff;
}

section.horizontal {
  overflow-x: hidden;
}

section.horizontal .pin-wrap,
section.horizontal .animation-wrap {
  display: flex;
  position: relative;
  z-index: 1;
  height: 100vh;
}

section.horizontal .item {
  position: relative;
  padding: 150px 80px;
  flex: 0 0 500px;
  height: calc(100vh - 300px);
  display: flex;
  align-items: center;
  line-height: 1.7;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  border-right: 1px solid rgba(0, 0, 0, 0.06);
  background-color: transparent;
}

section.horizontal .item:before {
  position: absolute;
  font-size: 100px;
  opacity: 0.13;
  font-weight: bold;
  z-index: -1;
  -webkit-transform: translate(-30px, -50px);
  transform: translate(-30px, -50px);
  line-height: 1;
}

section.horizontal .animation-wrap.to-right {
  counter-reset: item;
  float: left;
}

section.horizontal .animation-wrap.to-left {
  counter-reset: item 11;
  float: right;
}

section.horizontal .animation-wrap.to-right .item:before {
  counter-increment: item;
  content: counter(item);
}

section.horizontal .animation-wrap.to-left .item:before {
  counter-increment: item -1;
  content: counter(item);
}

section.horizontal .animation-wrap .item:nth-child(2n + 2) {
  align-items: flex-start;
}

section.horizontal .animation-wrap .item:nth-child(4n + 4) {
  align-items: flex-end;
}