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

::-webkit-scrollbar {
  width: 0;
}

header {
  position: relative;
  height: 100vh;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #c6d9d3;
}
header .overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
header .overlay h1 {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 5;
  margin: 0;
  text-transform: uppercase;
  text-align: center;
  font-size: 9rem;
  text-shadow: 25px -15px rgba(25, 42, 46, 0.04);
  color: #0a1011;
  mix-blend-mode: overlay;
}
header .overlay h1 span {
  margin-top: -2em;
  padding-top: 0.5em;
  display: block;
  letter-spacing: 5px;
  font-size: 1.25rem;
}
header .parallax {
  position: relative;
  width: 100%;
  height: 100%;
}
header .parallax div {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-position: 0 50%;
  background-repeat: no-repeat;
  background-size: 100%;
}
header .parallax .one {
  background-image: url("../svg/mountains-1.svg");
  z-index: 4;
}
header .parallax .two {
  background-image: url("../svg/mountains-2.svg");
  z-index: 3;
  margin-bottom: -22%;
}
header .parallax .three {
  background-image: url("../svg/mountains-3.svg");
  z-index: 2;
}
header .parallax .four {
  background-image: url("../svg/mountains-4.svg");
  z-index: 1;
}
header .parallax .five {
  background-image: url("../svg/mountains-5.svg");
  z-index: 0;
}

main {
  position: relative;
  padding: 2em 4em;
  background-color: #ffffff;
  box-shadow: 0px 5px 10px rgba(0, 0, 0, 0.08);
}
main .container {
  font-size: 1rem;
  color: #192a2e;
}
main .container pre {
  padding: 1em;
  border-radius: 0.25em; 
  background-color: rgba(25, 42, 46, 0.05);
}