网页顶部智能固定导航特效
js黑色的网页顶部固定层导航，页面上下滚动导航智能显示或隐藏效果代码。适用于网页导航交互特效。
(The js black webpage has a fixed layer navigation at the top, and the page scrolls up and down to display or hide the effect code intelligently. It is suitable for web page navigation interactive special effects.)
页:
[1]