Style.css

* {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
}
body {
  font-family: "Open Sans", sans-serif;
  background: linear-gradient(#200016, #10001f);
  height: 100vh;
}
a {
  text-decoration: none;
  color: white;
}
header {
  position: absolute;
  width: 95%;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 30px;
}
header .logo {
  font-size: 25px;
  text-transform: uppercase;
}
header .logo span {
  color: #f521eee0;
}
header ul {
  display: flex;
  justify-content: center;
  align-items: center;
  list-style: none;
}
header ul li {
  margin-right: 30px
}
header ul li a {
  padding: 6px 15px;
  border-radius: 20px;
  transition: 0.5s
}
header ul li a:hover, .active {
  background-color: #fff;
  color: #200016;
}
.main {
  position: relative;
  height: 100vh;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}
.main::after {
  content: "";
  position: absolute;
  bottom: 0;
  height: 100px;
  width: 100%;
  background-color: linear-gradient(to top,#200016,transparent);
}
.main img {
   position: absolute;
   width: 100%;
   height: 100vh;
   object-fit: cover;
}
#moon {
  mix-blend-mode: screen;
  transform: translateY(80px);
  transition: 0.5s
}
.marei {
  position: absolute;
  color: #fff;
  font-size: 30px;
  text-transform: uppercase;
  transform: translateY(-140px);
  transition: 1s;
}
.marei span {
  color: #f521eee0;
}
.content {
  color: #fff;
  padding: 30px;margin: 20px;
}
.content h2 {
  margin: 20px;
  font-size: 30px;
}
.content p {
  margin: 20px;
}