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

html {
  background: #051937;
  overflow-x: hidden;
}

body {
  min-height: 100vh;
  position: relative;
}

.header:before {
  z-index: 0;
  content: "CSS";
  font-size: 200%;
  color: white;
  position: absolute;
  display: flex;
  justify-content: center;
  align-items: center;
  top: 0;
  left: 0;
  height: 100vh;
  width: 100vw;
  background: #000;
  transform: translateX(100%);
  animation-name: translate;
  animation-duration: 2s;
}

body:after, body:before {
  -webkit-clip-path: polygon(100% 0, 0 0, 0 77.5%, 1% 77.4%, 2% 77.1%, 3% 76.6%, 4% 75.9%, 5% 75.05%, 6% 74.05%, 7% 72.95%, 8% 71.75%, 9% 70.55%, 10% 69.3%, 11% 68.05%, 12% 66.9%, 13% 65.8%, 14% 64.8%, 15% 64%, 16% 63.35%, 17% 62.85%, 18% 62.6%, 19% 62.5%, 20% 62.65%, 21% 63%, 22% 63.5%, 23% 64.2%, 24% 65.1%, 25% 66.1%, 26% 67.2%, 27% 68.4%, 28% 69.65%, 29% 70.9%, 30% 72.15%, 31% 73.3%, 32% 74.35%, 33% 75.3%, 34% 76.1%, 35% 76.75%, 36% 77.2%, 37% 77.45%, 38% 77.5%, 39% 77.3%, 40% 76.95%, 41% 76.4%, 42% 75.65%, 43% 74.75%, 44% 73.75%, 45% 72.6%, 46% 71.4%, 47% 70.15%, 48% 68.9%, 49% 67.7%, 50% 66.55%, 51% 65.5%, 52% 64.55%, 53% 63.75%, 54% 63.15%, 55% 62.75%, 56% 62.55%, 57% 62.5%, 58% 62.7%, 59% 63.1%, 60% 63.7%, 61% 64.45%, 62% 65.4%, 63% 66.45%, 64% 67.6%, 65% 68.8%, 66% 70.05%, 67% 71.3%, 68% 72.5%, 69% 73.6%, 70% 74.65%, 71% 75.55%, 72% 76.35%, 73% 76.9%, 74% 77.3%, 75% 77.5%, 76% 77.45%, 77% 77.25%, 78% 76.8%, 79% 76.2%, 80% 75.4%, 81% 74.45%, 82% 73.4%, 83% 72.25%, 84% 71.05%, 85% 69.8%, 86% 68.55%, 87% 67.35%, 88% 66.2%, 89% 65.2%, 90% 64.3%, 91% 63.55%, 92% 63%, 93% 62.65%, 94% 62.5%, 95% 62.55%, 96% 62.8%, 97% 63.3%, 98% 63.9%, 99% 64.75%, 100% 65.7%);
  clip-path: polygon(100% 0, 0 0, 0 77.5%, 1% 77.4%, 2% 77.1%, 3% 76.6%, 4% 75.9%, 5% 75.05%, 6% 74.05%, 7% 72.95%, 8% 71.75%, 9% 70.55%, 10% 69.3%, 11% 68.05%, 12% 66.9%, 13% 65.8%, 14% 64.8%, 15% 64%, 16% 63.35%, 17% 62.85%, 18% 62.6%, 19% 62.5%, 20% 62.65%, 21% 63%, 22% 63.5%, 23% 64.2%, 24% 65.1%, 25% 66.1%, 26% 67.2%, 27% 68.4%, 28% 69.65%, 29% 70.9%, 30% 72.15%, 31% 73.3%, 32% 74.35%, 33% 75.3%, 34% 76.1%, 35% 76.75%, 36% 77.2%, 37% 77.45%, 38% 77.5%, 39% 77.3%, 40% 76.95%, 41% 76.4%, 42% 75.65%, 43% 74.75%, 44% 73.75%, 45% 72.6%, 46% 71.4%, 47% 70.15%, 48% 68.9%, 49% 67.7%, 50% 66.55%, 51% 65.5%, 52% 64.55%, 53% 63.75%, 54% 63.15%, 55% 62.75%, 56% 62.55%, 57% 62.5%, 58% 62.7%, 59% 63.1%, 60% 63.7%, 61% 64.45%, 62% 65.4%, 63% 66.45%, 64% 67.6%, 65% 68.8%, 66% 70.05%, 67% 71.3%, 68% 72.5%, 69% 73.6%, 70% 74.65%, 71% 75.55%, 72% 76.35%, 73% 76.9%, 74% 77.3%, 75% 77.5%, 76% 77.45%, 77% 77.25%, 78% 76.8%, 79% 76.2%, 80% 75.4%, 81% 74.45%, 82% 73.4%, 83% 72.25%, 84% 71.05%, 85% 69.8%, 86% 68.55%, 87% 67.35%, 88% 66.2%, 89% 65.2%, 90% 64.3%, 91% 63.55%, 92% 63%, 93% 62.65%, 94% 62.5%, 95% 62.55%, 96% 62.8%, 97% 63.3%, 98% 63.9%, 99% 64.75%, 100% 65.7%);
  display: block;
  height: 200px;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
}

body:after {
  content: "";
  background: linear-gradient(120deg, #113e9e, #b30082, #d31835);
  background-size: 200% 300%;
  opacity: 0.6;
  -webkit-animation: AnimationName 15s ease infinite;
  -moz-animation: AnimationName 15s ease infinite;
  animation: AnimationName 15s ease infinite;
}

body:before {
  height: 650px;
  margin-top: -250px;
  background: rgba(189, 189, 189, 0.1);
  content: "";
}

.header {
  position: relative;
  z-index: 2;
  padding: 40px 40px 60px 3vw;
  height: 150px;
}

.header h1 {
  color: white;
  margin-left: 10px;
  padding-bottom: 10px;
  font-weight: lighter;
  border-bottom: 8px solid #eee;
  display: inline;
}

main {
  min-height: calc(100vh - 320px);
}

.yfold {
  background: rgba(189, 189, 189, 0.2);
  position: relative;
  z-index: 1;
  margin: 20px;
  margin-left: 3vw;
  margin-right: 3vw;
  border-radius: 12px;
  width: clamp(10px, 94vw, 900px);
}

.yfold-title {
  color: white;
  padding: 10px 12px 5px 15px;
  cursor: pointer;
}

.arrow {
  margin-right: 10px
}

.yfold-content {
  background: #edd;
  position: relative;
  z-index: 2;
  border-radius: 12px;
  padding: 40px;
  overflow: hidden;
}

h1, h2, h3 {
  font-family: "Poppins", sans-serif;
  font-weight: lighter;
}

.anim-hide {
  padding-top: 0;
  padding-bottom: 0;
  animation-name: disappear;
	animation-duration: 0.75s;
	max-height: 0;
	margin: 0;
  transition: padding 0.75s ease .3s;
}

.anim-show {
  animation-name: appear;
	animation-duration: 0.75s;
	max-height: initial;
	margin: 0 0 3ex 0;
  transition: padding 0.75s ease .1s;
}






footer {
  bottom: 0px;
  width: 100%;
  min-height: 150px;
  background: #002;
  opacity: 0.6;
  padding: 30px 50px;

  display: flex;
  flex-direction: row;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
}

footer * {
  margin: 5px 0;
}

@media (min-width: 1500px) {
  footer {
    height: 150px;
    position: absolute;
    top: calc(20px + 150px);
    right: 3vw;
    width: calc(91vw - 900px);
    border-radius: 12px;
  }
}

@-webkit-keyframes AnimationName {
  0% {
    background-position: 0% 50%
  }

  50% {
    background-position: 100% 50%
  }

  100% {
    background-position: 0% 50%
  }
}

@-moz-keyframes AnimationName {
  0% {
    background-position: 0% 50%
  }

  50% {
    background-position: 100% 50%
  }

  100% {
    background-position: 0% 50%
  }
}

@keyframes AnimationName {
  0% {
    background-position: 0% 50%
  }

  50% {
    background-position: 100% 50%
  }

  100% {
    background-position: 0% 50%
  }
}

@keyframes appear {
  0% {
    max-height: 0;
    margin-bottom: 0;
  }

  100% {
    max-height: 500px;
    margin-bottom: 3ex;
  }
}

@keyframes disappear {
  0% {
    max-height: 500px;
    margin-bottom: 3ex;
  }

  100% {
    max-height: 0;
    margin-bottom: 0;
  }
}

@keyframes translate {
  0% {
    transform: translateX(0%);
    background: #000;
  }

  30% {
    background: #000;
    color: white;
  }

  75% {
    transform: scale(2);
    background: #002;
  }

  100% {
    transform: translateX(100%);
  }
}