transform: rotate(180deg);
  white-space: nowrap;
  writing-mode: vertical-rl;

参考URL： https://developer.mozilla.org/zh-CN/docs/Web/API/Document/styleSheets#%E6%B5%8F%E8%A7%88%E5%99%A8%E5%85%BC%E5%AE%B9%E6%80%A7