h1 { margin:150px auto 30px auto; text-align:center}
	img { background-color:#fff;}
	.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.next {
	  left: 50%;
	  transform: translateY(-50%) translateX(-150%) scale(0.6);
	  opacity: 1;
	  z-index: 1;
	}

	.cascade-slider_item.prev {
	  left: 50%;
	  transform: translateY(-50%) translateX(50%) scale(0.6);
	  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-left { left: 0; }

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

	.cascade-slider_nav {
	  position: absolute;
	  bottom: -120px;
	  width: 100%;
	  text-align: center;
	  z-index: 5;
	}

	.cascade-slider_dot {
	  display: inline-block;
	  width: 1em;
	  height: 1em;
	  margin: 1em;
	  background: #ddd;
	  list-style: none;
	  cursor: pointer;
	}

	.cascade-slider_dot:hover { background: #555; }

	.cascade-slider_dot.cur { background: #555; }