/***** Top menu *****/
.navbar {
	-o-transition: all .6s; -moz-transition: all .6s; -webkit-transition: all .6s; -ms-transition: all .6s; transition: all .6s;
}

/***** float navbar *****/
#navbar {
  overflow: hidden;
  z-index:100;
}

.sticky {
  position:fixed;/*sticky;*/
  top: 0;
  left:0;
  width:100%;
  height:auto;
  background:#fff;
  box-shadow:3px 3px 3px rgba(0, 0, 0, 0.05);
}	

/**雪花**/
.snow-container {
  position: absolute;
  height:120vh;
  width:100%;
  top:0;
  overflow:hidden;
  z-index:1;
  pointer-events: none;
}

.snow {
  display: block;
  position: absolute;
  z-index: 2;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  pointer-events: none;
  -webkit-transform: translate3d(0, -100%, 0);
          transform: translate3d(0, -100%, 0);
  -webkit-animation: snow linear infinite;
          animation: snow linear infinite;
}
.snow.foreground {
  background-image:url("snow-large.png");
  -webkit-animation-duration: 15s;
          animation-duration: 15s;
}
.snow.foreground.layered {
  -webkit-animation-delay: 7.5s;
          animation-delay: 7.5s;
}
.snow.middleground {
  background-image:url(snow-medium.png);
  -webkit-animation-duration: 20s;
          animation-duration: 20s;
}
.snow.middleground.layered {
  -webkit-animation-delay: 10s;
          animation-delay: 10s;
}
.snow.background {
  background-image:url(snow-small.png);
  -webkit-animation-duration: 30s;
          animation-duration: 30s;
}
.snow.background.layered {
  -webkit-animation-delay: 15s;
          animation-delay: 15s;
}

@-webkit-keyframes snow {
  0% {
    -webkit-transform: translate3d(0, -100%, 0);
            transform: translate3d(0, -100%, 0);
  }
  100% {
    -webkit-transform: translate3d(15%, 100%, 0);
            transform: translate3d(15%, 100%, 0);
  }
}

@keyframes snow {
  0% {
    -webkit-transform: translate3d(0, -100%, 0);
            transform: translate3d(0, -100%, 0);
  }
  100% {
    -webkit-transform: translate3d(15%, 100%, 0);
            transform: translate3d(15%, 100%, 0);
  }
}