body {
	font-family: neuzeit-grotesk, sans-serif;
  font-weight: 700;
	font-size: 36px;
	line-height: 1.25;
	background-color: #ffffff;
	color: #333333;
}

header {
  position: fixed;
  top: 36px;
  padding: 0 36px;
  z-index: 1;
  transition: color 0.5s;
  width: 100%;
  display: flex;
  justify-content: space-between;
}

header.white {
  color: #ffffff;
}

section {
  background-color: white;
  min-height: 100vh;
  padding: 80px;
  position: sticky;
  top: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

div.content {
  position: relative;
}

div.description{
  text-align: center;
  transition: color 0.5s;
  font-weight: 400;
  font-size: 48px;
}

div.description.white{
  color: white;
}

section.s2 {
  background-color: #00fd97;
}
section.s3 {
  background-color: #cccccc;
}

section.s4 {
  background-color: #f3f1f2;
}

div.progress {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 10px;
  background-color: #333333;
  z-index: 1;
  transition: background-color 0.5s;
}

div.progress.white {
  background-color: #ffffff;
}

@media screen and (max-width: 600px) {
  div.description{
    font-size: 24px;
  }
}