Menu, step bar and progress ring导航、步骤条与环形进度

Navigation: a tween and a CSS transition导航：JS 补间与 CSS 过渡

Both respond to hover and keyboard focus.两者都响应鼠标悬停和键盘焦点。

A step bar步骤条

1. Read
2. Run
3. Compare

Circular progress环形进度