.all-snow {
  /*background: linear-gradient(to bottom right, #3163d1 ,#041e68);*/
  height:100vh;
  width:100%;
  position:absolute;
  left:50%;
  top:50%;
  transform: translate(-50%, -50%);

}
.snow{
    position: absolute;
    height: 100%;
    width: 100%;
    overflow: hidden;
    background-image: url("../images/snow1.png"), url("../images/snow2.png"), url("../images/snow3.png");
    
    animation: snow 20s linear  infinite ;
  }
  @keyframes snow {
    0% {
      background-position: 0px 0px, 0px 0px, 0px 0px;
    }
    100% {
      background-position: 500px 1000px, 400px 400px, 300px 300px;
    }
  }