#particles-js {
  position: absolute;
  width: 100%;
  height: 100%;
  transition: background-color 1s ease;
  z-index: 0; 
  color:#fff;
  }
#particles-js1 {
  position: absolute;
  width: 100%;
  height: 100%;
  transition: background-color 1s ease;
  z-index: 0; 
  color:#fff;
  }