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More and more developers like to design a single page, especially a product introduction page, with each important part (node) of a page associated with a simple navigation bar. In this example, a page consists of several important nodes, the side of the page will show a number of simple vertical navigation far point, slide the dot will display the corresponding part of the node name, click on the page will scroll to the corresponding part of the node, While the navigation bar position is fixed.
When the screen is small enough (such as mobile devices), will display an icon in the lower right corner of the screen, touch icon, it will expand the navigation menu, click on the menu page will scroll to the corresponding node, the effect is very cool.
