.wrap{
  margin: 0; padding: 0;
  position: absolute;
  width: 100%;
  height: 2500px;
  background-position: center top;
}

#fullpage{
  position: absolute;
  width: 100%;
  height: 3145px;
  left: 0px;
  top: 110px;
  margin-left: 18px;
  overflow: hidden;
  background: url(../img/basic2.jpg) no-repeat center 0;
  -ms-overflow-style: none;
}
::-webkit-scrollbar{
  display: none;
}
#fullpage::-webkit-scrollbar{ display:none; }

.img{
  padding-left: 0;
  position: fixed;
  left: 0px;
  top: -300px;
  z-index: 8;
  width: 100%;
  height: 1440px;
  background: url(../img/app_bg.png) no-repeat center 0;
}

.scroll{
  background: url(../img/scroll.png) no-repeat center 0;
  width: 156px;
  height: 40px;
  position: absolute;
  top: 40px;
  left: 50%;
  margin-left: -50px;
  z-index: 10;
  animation-duration: 0.6s;
  animation-name: down;
  animation-iteration-count: infinite;
}

@keyframes down{
  100% {
    top: 40px;
  }
  75%{
    top: 43px;
  }
  0% {
    top: 45px;
  }
}