.box_main {
  width: 80rpx;
  height: 80rpx;
  background: #272636;
  transition: width 0.8s;
  -moz-transition: width 0.8s; /* Firefox 4 */
  -webkit-transition: width 0.8s; /* Safari and Chrome */
  -o-transition: width 0.8s; /* Opera */
  border-radius: 50rpx;
  position: fixed;
  right: 10rpx;
  bottom: 350rpx;
  overflow: hidden;
  z-index: 4;
}

.box_isopen {
  width: 420rpx;
}

.box_main .dian {
  text-align: center;
  width: 80rpx;
  height: 80rpx;
  line-height: 66rpx;
  color: #ffff;
  font-size: 50rpx;
  background: none;
}

.box_main .dian image {
  width: 60rpx;
  height: 20rpx;
}

.box_main.box_isopen  .dian {
  display: none;
}

.box_main .cl_list {
  display: none;
}

.box_main.box_isopen  .cl_list {
  display: block;
  margin-left: 20rpx;
}

.box_main .cl_list .item {
  display: inline-block;
  width: 100rpx;
  height: 80rpx;
  text-align: center;
  line-height: 80rpx;
  color: #fff;
  vertical-align: top;
  font-size: 32rpx;
}

.box_main .cl_list .item.big {
  font-size: 70rpx;
  line-height: 70rpx;
}