writing-mode 垂直居中

.v_line_time_head {
  width: 40rpx;
  display: block;
  background: var(--color-cg);
  height: 130rpx;
  text-align: center;
  writing-mode: vertical-lr;
  -webkit-writing-mode: vertical-lr;
  -ms-writing-mode: vertical-lr;
  margin:auto 0;
  margin-right: 16rpx;
}
.time_head {
  font-size: var(--font-te);
  color: var(--color-cd);
}

  <view class='v_line_time_head' hidden='{{item.show_date==""}}'>
            <text class='time_head'>{{item.show_date}}text>
          view>