body {
  margin: 0;
  overflow: hidden;
  user-select: none;
  background: #0d0d0d;
  min-height: 100vh;
  font-family: sans-serif;
}

@keyframes logo {
  from {
    transform: translateY(-100%);
  }
  to {
    transform: translateY(0);
  }
}

img {
  animation: 0.25s ease-in logo forwards;
}

@keyframes fadein {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.x1 {
  opacity: 0;
  animation: 3s ease-in 500ms fadein forwards;
}
.x2 {
  opacity: 0;
  animation: 3s ease-in 1500ms fadein forwards;
}

.dd:after {
  display: inline-block;
  content: "\2193";
  margin-left: 0.4em;
  transform: translateY(-0.1em);
}
.bs {
  display: flex;
  justify-content: center;
  gap: 1em;
  margin: 1em;
  position: relative;
  z-index: 99;
}
button,
label {
  background: black;
  color: white;
  border: none;
  padding: 10px;
  font-size: 1.2em;
}
button:hover {
  outline: 2px solid white;
}
button.active {
  background: red;
}