Where am I going with this? How can we make HTML and CSS so predictable that they validate against a custom grammar? This is a very alpha look at describing OO CSS and HTML in UML.
为什么要写这篇内容？如何才能使得HTML和CSS具有预测性，以便对照自定义语法来进行验证？ 下图是用UML描述面向对象的CSS和HTML的一个Alpha版本。
