body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  background-image: url(background.png);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  font-family: 'IBM Plex Mono', 'Courier New', monospace;
  color: white;
  flex-direction: column;
  backdrop-filter: brightness(0%) blur(3vh);
  -webkit-backdrop-filter: brightness(0%) blur(3vh);
  background-color: black;
}

#startbox {
  display: flex;
  justify-content: center;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 15vh;
  width: 40vh;
  background-color: #0000003b;
  border-radius: 1vh;
  box-shadow: 0px 0px 1.5vh #0000002d;
  backdrop-filter: blur(0.5vh);
  -webkit-backdrop-filter: blur(0.5vh);
  margin-bottom: 2vh;
  margin-top: -5vh;
}

h1 {
  font-weight: 100;
  text-align: center;
  line-height: 0px;
  text-shadow: 0px 0px 0.7vh #ffffff83;
  font-size: 3vh;
}

#startbox p {
  line-height: 0px;
  font-size: 1.5vh;
}

#links {
  text-align: center;
  box-shadow: 0px 0px 0.4vh #0000002d;
  text-shadow: 0px 0px 0.3vh #000000;
  border-radius: 0.3vh;
  padding: 0.25vh 0vh;
  font-size: 1.2vh;
}

#back {
  position: fixed;
  top: 2vh;
  left: 1.5vh;
  width: 8vh;
  height: 4vh;
  background-color: #74747400;
  border-radius: 1vh;
  z-index: 1000;
  backdrop-filter: blur(0.5vh);
  -webkit-backdrop-filter: blur(0.5vh);
  transition: 0.2s ease;
  color: #ffffff45;
  box-shadow: 0px 0px 1.5vh #00000000;
}
#back:hover {
  background-color: #74747410;
  color: white;
  box-shadow: 0px 0px 1vh #ffffff20;
  left: 2vh;
}

#back p {
  font-size: 1.666667vh;
  line-height: 0px;
  text-align: center;
  line-height: 0.5vh;
}
#links a {
  text-decoration: none;
  color: white;
  font-size: 1.2vh;
  padding: 0.25vh 1vh;
  border-radius: 0.3vh;
  box-shadow: 0px 0px 0.4vh #00000000;
  transition: 0.2s ease;
}

#links a:hover {
  box-shadow: 0px 0px 0.4vh #0000005f;
}

#startbox {
  opacity: 0;
  animation: fadeIn 1s forwards;
}

@keyframes fadeIn {
  to {
    opacity: 1;
    margin-top: 5vh;
  }
}

#links {
  opacity: 0;
  animation: fadeInLinks 1s forwards;
}

@keyframes fadeInLinks {
  to {
    opacity: 1;
  }
}

body {
  animation: fadeInBody 1.5s forwards;
}

@keyframes fadeInBody {
  to {
    backdrop-filter: brightness(75%) blur(0.4vh);
    -webkit-backdrop-filter: brightness(75%) blur(0.4vh);
  }
}