*{
  box-sizing:border-box;
  margin: 0;
  padding: 0;
}
body{
  background: #3398db;
}
.slider_wrap{
  overflow: hidden;
  max-width: 100%;
}
.slider{
  margin: 0 auto;
  width: 1000px;
}
.slick-list{
  overflow:visible;
}
.slider img{
  width: 100%;
}
.slick-arrow{
  z-index: 2;
}

/*ad*/
.ad{
  margin: 100px auto;
  max-width: 1000px;
}