.cascade-slider_container {
  position: relative;
  width: 1000px;
  height: 500px;
  margin: 0 auto;
}

.cascade-slider_item {
  
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translateY(-50%) translateX(-50%) scale(0.3);
  transition: all 1s ease;
  opacity: 0;
  z-index: -1;
}
.cascade-slider_item img{
    width: 90%;
    margin: auto;
    display: block;
    box-shadow: 0px 7px 15px 0px rgba(0, 0, 0, 0.15); 
}

.cascade-slider_item.next {
  left: 50%;
  transform: translateY(-50%) translateX(-120%) scale(0.8);
  opacity: 1;
  z-index: 1;
}
/*.cascade-slider_item.next img, .cascade-slider_item.prev img{
  width: 80%;
}*/

.cascade-slider_item.prev {
    left: 50%;
    transform: translateY(-50%) translateX(20%) scale(0.8);
    opacity: 1;
    z-index: 1;
}

.cascade-slider_item.now {
  top: 50%;
  left: 50%;
  transform: translateY(-50%) translateX(-50%) scale(1);
  opacity: 1;
  z-index: 5;
}

.cascade-slider_arrow {
  display: inline-block;
  position: absolute;
  top: 50%;
  cursor: pointer;
  z-index: 5;
}
.cascade-slider_arrow img{
  filter: saturate(0) brightness(100%);
}
.cascade-slider_arrow img:hover{
  filter: none;
}

.cascade-slider_arrow-left { left: 0; }

.cascade-slider_arrow-right { right: 0; }

.cascade-slider_nav {
  position: absolute;
  bottom: -50px;
  width: 100%;
  text-align: center;
  z-index: 5;
}

.cascade-slider_dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  margin: 0 5px;
  background: transparent;
  border: 2px solid #cdcdcd;
  border-radius: 100%;
  list-style: none;
  cursor: pointer;
}

.cascade-slider_dot:hover { background: #1369be;border: #1369be; }

.cascade-slider_dot.cur { background: #1369be; border: #1369be; }