body{
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', 'Open Sans', sans-serif;
  background: linear-gradient(rgba(141, 141, 141, 0.1)20%, rgba(0, 0, 0, 0.1)),url(../img/header-musim-gugur.jpg);
  background-size: cover;
  background-position: center;
}
main{
  width: 100%;
  height: 100vh;
  overflow: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  opacity: 0;
  filter: blur(10px);
  transition: opacity 2s ease-in-out, filter 2s ease-in-out;
}
header{
  margin-top: 60px;
  z-index: 1;
  top: 0
    
}
header>h1{
  font-size: medium;
  text-align: center;
  color: #fff;
  font-weight: 400;
  background: rgba(0, 0, 0, 0.75);
  padding: 1px 15px 3px 15px;
  border: 1px solid white;
  border-radius: 15px;
}
#center{
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}
#rest{
  flex: 1;
}
img{
  width: 90px;
  height: 90px;
  border-radius: 100%;
  border: 1px solid white;
}
.btn{
  width: 85%;
  height: 45px;
  max-width: 350px;
  margin-top: 20px;
  border-radius: 25px;
  background-color: rgba(255, 255, 255, 0.4);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  transition: background-color 0.4s ease-in;
}
.btn:hover{
  background-color: rgba(255, 255, 255, 0.6);
}
.btn>a{
  display: flex;
  width: 100%;
  height: 100%;
  justify-content: center;
  align-items: center;
  text-decoration: none;
  color: #000;
  font-size: 16px;
}
svg{
  margin-right: 10px;
}
#vanta{
  z-index: 0;
  position: absolute;
  left: 0;
  right: 0;
  width: 100%;
  height: 100vh;     
}