The Magic of Scroll Events
In modern web design, it's very common to have a full-screen hero image at the top of a page. To allow the image to shine, the navigation bar is often made transparent so it doesn't break the visual flow.
However, as the user scrolls past the image and into the white content area, a white text navigation bar would become invisible. That's where JavaScript comes in.
By listening to the window's scroll event, we can detect exactly how far down the page the user is. Once they scroll past a certain threshold (like 50 pixels), we add a CSS class to the navbar.
Keep scrolling down to test the effect!
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