html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  display: flex;
}

.view {
  position: relative;
  width: 100%;
  margin: auto;
  overflow: hidden;
}

.view .list {
  display: flex;
  flex-wrap: nowrap;
  list-style: none;
  padding: 0;
  margin: 0;
}

.view .list .item {
  flex-shrink: 0;
  width: 100%;
}

.view .list .item img {
  width: 100%;
  display: block;
}

.view .btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background-color: #d5d1d1;
  outline: none;
  border: none;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  font-size: 16px;
  color: #fff;
  cursor: pointer;
}

.view .btn.prev {
  left: 15px;
}

.view .btn.next {
  right: 15px;
}

.view .page-list {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
}

.view .page-list .page-item {
  width: 15px;
  height: 15px;
  box-sizing: border-box;
  border-radius: 50%;
  border: 1px solid #666;
  margin: 0 10px;
  position: relative;
  cursor: pointer;
}

.view .page-list .page-item.active::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background-color: gray;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}