Getting creative with layouts and interaction can help to create interesting websites that are still light in their code and page weight. You don’t just have to use this technique for traditional parallax when scrolling. Here’s a version with the scale hack on our original example on CodePen. The objects still parallax and move within the 3D space, scrolling at different speeds, but they all appear at the same size. With this, you can visually undo that 3D scaling, so that all your objects appear the same size even though they are in different areas of the 3D space. You can additionally add scale() to your transform of the elements you have applied your parallax to. This will also create a layered effect on overlapping objects when they move across the 3D space (as you scroll down in the example). Some objects will be further away in the 3D space than others, so they appear smaller. Naturally, when you’re placing objects in 3D space and setting your z-axis differently, you will create a feeling of depth. Take another look at the code in our test example on CodePen. How much they move/will move depends on your perspective value and your z-axis values on each element. The way to use perspective to create parallax effects is to give different z-axis values to your different HTML elements that you wish to parallax. The strength of the effect is determined by the value of this property. The perspective CSS property determines the distance between the z=0 plane and the user in order to give a 3D-positioned element some perspective.Įach 3D element with z>0 becomes larger each 3D-element with z<0 becomes smaller. What’s perspective?įor those that haven’t used it before, here’s an explanation from Mozilla’s developer docs. To make the effect work, we need to employ CSS perspective. Equally, setting perspective on an additional inner wrapper of your parallaxing elements would be better practice than setting it to your main or other important semantic HTML elements. But in production, you would likely want to add this to a wrapper around your 3D parallax HTML elements. In our example, we’ve added transform-style: preserve-3d to the body element. The main ‘tricks’ used to create the parallax effects are transform-style: preserve-3d, perspective and transform: translateZ(). If used sparingly, parallax can add a nice touch of movement to otherwise very static web pages. Parallax, whilst not very accessible, can be used to progressively enhance a website’s design. Did you know you can create some parallax effects without using JavaScript? Moving on from the simplest forms of background-position: fixed on background images, you can create some fairly complex parallax elements using just CSS alone.
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