.tActivity {
  position: relative;
  width: 100%;
  height: 500px;
  margin: 0 auto;
}

.tasItem {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translateY(-50%) translateX(-50%) scale(0.3);
  transition: all .4s ease;
  opacity: 0;
  z-index: -1;
  border-radius: 4px;
  overflow: hidden;
}

/*.tasItem.next {
  left: 50%;
  transform: translateY(-50%) translateX(-150%) scale(0.6);
  opacity: 1;
  z-index: 1;
}

.tasItem.prev {
  left: 50%;
  transform: translateY(-50%) translateX(50%) scale(0.6);
  opacity: 1;
  z-index: 1;
}

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

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

.tasItem.prev {
    left: 28%;
    transform: translateY(-49%) translateX(50%) scale(0.8);
    opacity: 1;
    z-index: 1;
}

.tasItem.prev2 {
    left: 40%;
    transform: translateY(-50%) translateX(50%) scale(0.7);
    opacity: 1;
    z-index: 0;
}

.tasItem.next {
    left: 73%;
    transform: translateY(-50%) translateX(-150%) scale(0.8);
    opacity: 1;
    z-index: 1;
    right: unset;
    background-position: unset;
}

.tasItem.next2 {
  left: 61%;
  transform: translateY(-50%) translateX(-150%) scale(0.7);
  opacity: 1;
  z-index: 0;
}


.tActivityArrow {
  display: inline-block;
  position: absolute;
  top: 50%;
  cursor: pointer;
  z-index: 5;
}
.tActivityArrow img{width: 15px;}
.tActivityArrowLeft { left: 0; }

.tActivityArrowRight { 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; }


@media only screen and (max-width: 1180px) {
  .tasItem.next{left: 76%;}
  .tasItem.next2{left: 66%;}
  .tasItem.prev{left: 24%;}
  .tasItem.prev2{left: 34%;}
}
@media only screen and (max-width: 991px) {
  .tasItem.next{left: 81%;}
  .tasItem.next2{left: 73%;}
  .tasItem.prev2{left: 27%;}
  .tasItem.prev{left: 18%;}
}
@media only screen and (max-width: 768px) {
  .tActivityArrowLeft{left: 30px;}
  .tActivityArrowRight{right: 30px;}
}
@media only screen and (max-width: 660px) {
  .tActivityArrowLeft{left: 0;}
  .tActivityArrowRight{right: 0;}
}
@media only screen and (max-width: 520px) {
  .tasItem.next {left: 92%;}
  .tasItem.next2 { left: 100%;}
  .tasItem.prev {left: 8%;}
  .tasItem.prev2 {left: 0;}
}
@media only screen and (max-width: 480px) {
  .tasItem.next {left: 96%;}
  .tasItem.prev {left: 4%;}
  .tActivityArrowLeft {left: -20px;}
  .tActivityArrowRight {right: -20px;}
  .tActivityArrowLeft > img, .tActivityArrowRight > img {width: 12px;}
  .tActivityArrowRight > img {width: 40px; padding: 15px 8px 15px 20px;}
  .tActivityArrowLeft > img {width: 40px; padding: 15px 20px 15px 8px;}

}
@media only screen and (max-width: 420px) {
  .tasItem.next {left: 108%;}
  .tasItem.next2 { left: 120%;}
  .tasItem.prev {left: -8%;}
  .tasItem.prev2 {left: -20%;}
}
@media only screen and (max-width: 380px) {
  .tasItem.next {left: 115%;}
  .tasItem.next2 {left: 120%;}
  .tasItem.prev {left: -15%;}
  .tasItem.prev2 {left: -20%;}
}
@media only screen and (max-width: 350px) {
  .tasItem.prev {left: -25%;}
  .tasItem.prev2 {left: -22%;}
  .tasItem.next {left: 125%;}
  .tasItem.next2 {left: 124%;}
}