The transform drops the presentationelements and because DITA has no matching tags.
转换中丢掉了表示元素和，因为DITA没有对应的标签。
2
CSS has addressed many issues related to window dressing: fonts, spacing, padding, backgrounds, and more-all visual presentationelements.
CSS已解决许多与窗口修饰相关的问题：字体、间距、填充、背景，等等—所有视觉呈现元素。
3
Presentation development, introducing new features that bring the creation and management of new presentationelements, such as layers and style sheets, into the integrated design environment.