body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: 'Segoe UI', sans-serif;
  background: #0f2027;
  color: white;
  overflow: hidden;
}

#particles-js {
  position: absolute;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, #0f2027, #203a43, #2c5364);
  z-index: 0;
}

.content {
  position: relative;
  z-index: 1;
  text-align: center;
  top: 50%;
  transform: translateY(-50%);
}

h1 {
  font-size: 3em;
  margin: 0;
}

p {
  font-size: 1.2em;
  margin-top: 10px;
}

#countdown {
  margin-top: 30px;
  font-size: 1.5em;
  letter-spacing: 2px;
}

.fade-in {
  opacity: 0;
  animation: fadeIn 2s forwards;
}
.delay {
  animation-delay: 1s;
}
.delay-2 {
  animation-delay: 2s;
}

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