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5 min cursor trails with grid + CSS custom properties 💫 .grid div { opacity: var(--o); transition: opacity 0.8s, rotate 0.4s; &:hover { transition-duration: 0s; rotate: calc(var(--r, 0) * 90deg); opacity: 1; }} trick: dynamic :hover transition
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![CSS Trick 🧲 You can create magnetic links with the power of custom properties and some JavaScript 💪 a { translate: calc(clamp(-1, var(--x), 1) * var(--pad-x)) ...; transition: translate var(--s, 1s) var(--ease, var(--elastic)); } a:hover { --s: 0s; } The trick here is to pad out the list items wrapping your links and use that as a translation limit 🛑 Start by using some JavaScript to calculate a value between -1 and 1 for both the x/y axis on pointermove for each list item, not the link! 🔗 If your pointer was at the center of the item, you'd get [0,0]. If it was in the top right, you'd get [1,-1] ☝️ It's worth checking out the JavaScript snippet to see how the mapping function works. Essentially, you create a function that when given a value between two bounds, will give you a mapped value back 🤙 const mapX = mapRange( item.offsetWidth * -0.5, item.offsetWidth * 0.5, 1, -1 ) Then, on pointermove, you plug the pointer position in to get the value back out and pass that into your CSS const x = mapX(item.centerX - event.x) document.documentElement.style.setProperty(--x, x) When the pointer leaves the list item, you make sure to reset these values back to 0 ✨ Once CSS has your values, it's the trick of updating the translation of each part You know that in each axis, you only want to translate the link by the padding amount li a { translate: calc(clamp(-1, var(--x), 1) * var(--pad-x)) calc(clamp(-1, var(--y), 1) * var(--pad-y)); transition: translate var(--speed, 1s) var(--ease, var(--elastic)); } This will translate the link within the list item by the desired amount. The cool part here is that you can set an offset for the text inside the link and have that move at a different rate ⭐️ By only updating the --pad-x/y custom properties for the inside the link, you can control how much it moves nav a span { --pad-x: 0.25rem; --pad-y: 0.25rem; } And the last piece, how do you update the behavior for transition speeds? And so it springs back like that? Again, use custom properties ✨ a:hover { --s: 0s; } a { transition: translate var(--s, 1s) var(--ease, var(--elastic)); } By default, a link will use --elastic easing via linear() and have a transition-duration of 1s. When a link is hovered that speed becomes 0s because you want the link to magnetise to your pointer. How about that little gap between when your pointer enters the item but hasn't hovered the link? Set a different transition so it transitions to being hovered 🫶 nav li:hover a { --ease: ease-out; --speed: 0.1s; } That's kinda it! 🙌 Use JavaScript (~40 loc) to get the information and then let CSS do all the lifting for you 💪 Any questions or suggestions, let me know 🙏 If you want a walkthrough video, also let me know please 🙏 CodePen.IO link below 👇](https://image.24vids.com/tw-1745716136824672271/ext_tw_video_thumb/1745612660081881088/pu/img/SsGz-uqmfdr1KZ7H.jpg)
![CSS Tip! 🤯 You can create a CSS-only version of this balance slider using a scroll animation on the underlying input[type=range] 🚀 ::-webkit-slider-thumb { view-timeline: --thumb inline; } Scroll animation driven by the slider thumb animates a number between the "min" and "max" of the range 😅 @property --value { inherits: true; initial-value: 0; syntax: ' '; } @keyframes sync { to { --value: 100; }} Tie that up to the contain animation-range ⚡️ .control { animation: sync both linear reverse; animation-timeline: --thumb; animation-range: contain; } Hoist the view timeline so all the parts of the control can use it! .control { timeline-scope: --thumb; } Use that value in a counter which is used for the labels. Create a low and a high for each side 😇 .control__label { counter-reset: low var(--value) high calc(100 - var(--value)); } .control__label::before { content: "COFFEE " counter(low) "%"; } .control__label::after { content: counter(high) "% MILK"; } That's the magic of updating the label values ✨ For the big track, it's a fake track. You can make use of the same --value property and do some calc() to work out the width of each part. .control__track::before { width: calc(var(--value) * 1% - 0.5rem); background: var(--coffee); border-radius: 4px; transition: width 0.1s; } The width leaves a little gap for the indicator piece 🤙 The color calculation for --coffee isn't too wild but again you can use the same --value .control__track { --coffee: hsl(24 74% calc( 24% + (30% * ((100 - var(--value, 0)) / 100)) / 1 ) / 0.4); } Now for the last piece. Making the track change height. You could set up another custom property and animate its value using the --thumb timeline too 🔥 @property --shift { initial-value: 0; inherits: true; syntax: ' '; } @keyframes shift { 0%, 31%, 61%, 100% { --shift: 0; } 32%, 60% { --shift: 1; } } Then use that --shift to update the translation of the label and height of the track 🤓 .label { transform: translateY(calc(var(--shift) * 50%)); transition: transform var(--speed) var(--timing); } Cool part here is that you can use the control to work out the @keyframes percentages 😅 Oh. And the timing for that little bounce? Use the linear() function 😎 :root { --timing: linear( 0, 0.5007 7.21%, 0.7803 12.29%, 0.8883 14.93%, 0.9724 17.63%, 1.0343 20.44%, 1.0754 23.44%, 1.0898 25.22%, 1.0984 27.11%, 1.1014 29.15%, 1.0989 31.4%, 1.0854 35.23%, 1.0196 48.86%, 1.0043 54.06%, 0.9956 59.6%, 0.9925 68.11%, 1 ); } Should probably do a video on this one. Lots of little custom property tricks for sure! 💯 It's not too far off the range slider with the tooltip that came up previously As always, any questions, let me know! Also, this one only works in Chrome currently ✅🥲 This one's a bit rocket science ha 🚀 CodePen.IO link below! 👇](https://image.24vids.com/tw-1748809599598399792/ext_tw_video_thumb/1748804672406843392/pu/img/xbvSosI5c_q3Oq2B.jpg)
![CSS in 2024 🤯 You can create a range slider with updating value tooltip and color changing track without using any JavaScript 🤯 ::-webkit-slider-thumb{ view-timeline: --thumb inline; } Scroll animation on the slider thumb that animates a number between the "min" and "max" of the range 😅 @property --value { syntax: ' '; } @keyframes sync { to { --value: 100; }} Tie that up to the contain animation-range ⚡️ .control { animation: sync both linear reverse; animation-timeline: --thumb; animation-range: contain; } Hoist the view timeline so the tooltip can use the value too! :root { timeline-scope: --thumb; } Then use it in the counter which goes in the tooltip 😇 .tooltip { counter-reset: val var(--value); } .tooltip::after { content: counter(val); } Then the accent color is based on the value too 🎨 [type=range] { accent-color: hsl(var(--value) 90% 65%); } The magic from the quoted post is using anchor positioning on the range thumb to position that tooltip 👏 Never thought of that when working on the spec for this API. This API lets you tether elements to other elements. Using the pseudo is a clever move! ::-webkit-slider-thumb { anchor-name: --thumb; } .tooltip { position: absolute; anchor-default: --thumb; left: anchor(50%); bottom: calc(anchor(top) + 25%); } The last piece is the little bounce transition... OK. I used a line or two of JavaScript for that 🙏😬 const updateDelta = ({ movementX }) => { document.documentElement.style.setProperty('--delta-x', movementX) } document.body.addEventListener('pointermove', updateDelta) But only so you can pass the movement delta to CSS and then reset the position with linear() to get that bouncy transition 😎 .hint { rotate: calc(clamp(-60, var(--delta-x) * -1, 60) * 1deg); transition: rotate 1s linear( 0, 0.2178 2.1%, 1.1144 8.49%, ... ); } Should probably do a video on this one. Lots of little tricks to break down with it for sure! 💯 As always, any questions, let me know! Also, this one only works in Chrome Canary with the Experimental Web Platform Features flag enabled ✅ This one almost feels like rocket science ha 🚀 CodePen.IO link below! 👇](https://image.24vids.com/tw-1742951071473967117/ext_tw_video_thumb/1742947397649506306/pu/img/A1Su3thQr8ZQBvdt.jpg)
![CSS Trick 🤙 You can create these tab bar controls by using :has() to count the number of tabs ⭐️ .tabs:has(input:nth-of-type(3)){--count: 3;} .tabs:has(:checked:nth-of-type(3)){--active: 200%;} .tabs::after{ translate:var(--active) 0;} Let's break it down in this ! 📼 Couple of CSS :has() tricks here combined with custom properties 😎 First things first, lay out the tabs using display: grid. This gives you a way to create equal-width tabs 🙏 .tabs { display: grid; grid-auto-flow: column; } Then you use :has() to count the number of tabs and store that in a custom property 🤓 .tabs:has(input:nth-of-type(3)) { --count: 3; } .tabs:has(input:nth-of-type(4)) { --count: 4; } Using the cascade, the last valid :has() gives you the number of tabs 🫶 Using the tab count, you can size the tab indicator. For the tab indicator, use the tabs pseudoelement: .tabs::after { content: ""; position: absolute; height: 100%; width: calc(100% / var(--count)); } See how you can use --count to determine its size 📏 Next, use :has() to determine which tab is active or :checked with input [type=radio] .tabs:has(:checked:nth-of-type(2)) { --active: 1; } .tabs:has(:checked:nth-of-type(3)) { --active: 2; } You can use a zero-indexed translation here. If the second input is :checked, set --active: 1, then translate the pseudoelement on the tabs to that position 👉 .tabs::after { translate: calc(var(--active, 0) * 100%) 0; } Or you could set active to the translation: .tabs:has(:checked:nth-of-type(2)) { --active: 100%; } Setting the custom property allows you to use the index elsewhere if you need it 🤙 The final piece is using mix-blend-mode 👀 The tabs have a black background-color, the pseudoelement is white, and the label text is white. When you use mix-blend-mode: difference on the pseudoelement it will give this effect that the text transitions from white to black sliding across 😎 .tabs::after { color: hsl(0 0% 100%); mix-blend-mode: difference; } You can totally mix up the colors here though and go with a different effect. The mechanics of how you can use CSS :has() is the main point here 🙏 As always, any questions, suggestions, etc. let me know CodePen.IO link below! 👇 (There's even a Tailwind CSS play for this one too 👀)](https://image.24vids.com/tw-1750370338041647245/ext_tw_video_thumb/1750367384505081856/pu/img/ZVW6XE5SU4mBEB5M.jpg)
