html, body {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
  height: 100%;
  font-family: sans-serif;
  background: #232323;
  color: #fff;
}

main {
  scroll-snap-type: y mandatory;
  overflow-y: scroll;
  height: 100vh;
}

.section {
  scroll-snap-align: start;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 2rem;
  box-sizing: border-box;
  position: relative;
}
.section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-size: cover;
  background-position: center;
  filter: blur(5px);
  opacity: 0.2;
  z-index: 0;
}
.section .content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
}

.intro .content h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

ul {
  list-style: none;
  padding: 0;
}
ul li {
  margin: 0.5rem 0;
}

footer {
  margin-top: auto;
  padding: 1rem;
  font-size: 0.875rem;
  text-align: center;
  opacity: 0.5;
}

#intro::before {
  background-image: url("https://static.vecteezy.com/system/resources/thumbnails/013/384/142/small_2x/fabric-texture-abstract-pattern-black-and-white-textiles-backgrounds-photo.jpg");
}

#about::before {
  background-image: url("https://wallpapers.com/images/hd/integral-project-management-cover-erpo8ef1af3wuquu.jpg");
}

#skills::before {
  background-image: url("https://visme.co/blog/wp-content/uploads/2017/07/50-Beautiful-and-Minimalist-Presentation-Backgrounds-013.jpg");
}

#projects::before {
  background-image: url("https://www.elegantthemes.com/blog/wp-content/uploads/2013/09/bg-1-full.jpg");
}

#contact::before {
  background-image: url("https://wallpapers.com/images/hd/professional-zoom-background-3h69jq8rrky7f3tj.jpg");
}