标签: html5 css3 user-interface frontend web-frontend
you will see this thing generally when you visit a website or an app for first time, It is also used to describe new features on websites to users.
答案 0 :(得分:0)
转到您看到它的网站,右键单击它,选择inspect元素,这将让您了解所使用的代码。这种事情可以通过模态窗口,弹出窗口,中途停留等来实现。