body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  width: 100%;
  font-family: 'Roboto', sans-serif;
  overflow: hidden;
  background: #000;
  color: #fff;
}

#particles-js {
  position: fixed;   
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 5;       
}

.center-text,
footer {
  position: absolute;
  z-index: 10;        
}

.center-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: clamp(2rem, 6vw, 5rem);
  font-weight: 700;
  color: #ffffff;
  opacity: 0;
  animation: fadeSlideIn 1s ease forwards;
}

footer {
  position: absolute;
  bottom: 10px;
  width: 100%;
  text-align: center;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.5);
  opacity: 0;
  animation: fadeSlideInFooter 1s ease forwards;
}

@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translate(-50%, calc(-50% + 20px));
  }
  to {
    opacity: 1;
    transform: translate(-50%, -50%);
  }
}

@keyframes fadeSlideInFooter {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}