* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

#particles-js {
  background: rgb(0, 0, 0);
  background: rgb(2, 35, 41);
  background: url("https://images.pexels.com/photos/773594/pexels-photo-773594.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=650&w=940");
  background-size: cover;
  background-position: bottom;
  height: 100vh;
}