style.css

@import url('https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,300;0,400;0,500;1,300;1,400&display=swap');

body {
  background-color: #1b1b1e;
  color: white;
  font-family: Roboto;
  margin: 0;
}

@keyframes fadeIn {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

.center {
  animation: fadeIn 1.5s;
  animation-fill-mode: forwards;
  
  margin: 10;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  padding: 10px;
  display: inline-block;
  border: 4px solid white;
  border-radius: 25px;
  background: rgba(14, 14, 18, 0.8);
  box-shadow: 0px 0px 20px white;
  padding: 25px;
}


footer {
  width: 100%;
  height: 80px;
  text-align: center;
  position: fixed;     
  bottom: 0px; 
}

a {
  text-decoration: none;
  color: #0084ff;
}

.buttons {
  cursor: pointer;
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  border-radius: 20px;
}

.link {
  width: 50px;
  height: 50px;
}

/* ---- reset ---- */
canvas {
  display: block;
}

/* ---- particles.js container ---- */
#particles-js {
  position: absolute;
  width: 100%;
  height: 100%;
  background-color: #1b1b1e;
  background-repeat: no-repeat;
  background-size: cover;
  background-position: 50% 50%;
}