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11th Physical Chemistry (1).html
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Problem: The .second-summary class was missing(in :Mathematics By VG Sir), causing the animation not to work. It has been fixed and now works correctly.
CodePen Blog
Chris’ Corner: PerformanCSS
How CSS relates to web performance is a funny dance. Some aspects are entirely negligible the vast majority of time. Some aspects are incredibly impactful and crucial to consider.
For example, whenever I see research into the performance of some form of CSS syntax, the results always seem to be meh, it’s fine. It can matter, but typically only with fairly extreme DOM weight situations, and spending time optimizing selectors is almost certainly wasted time. I do like that the browser powers that be think and care about this though, like Bramus here measuring the performance of @property for CSS Custom Property performance. In the end, it doesn’t matter much, which is an answer I hope they knew before it shipped everywhere (they almost certainly did). Issues with CSS syntax tend to be about confusion or error-prone situations, not speed.
But even though the syntax of CSS isn’t particularly worrisome for performance, the weight of it generally does matter. It’s important to remember that CSS that is a regular in the is render blocking, so until it’s downloaded and parsed, the website will not be displayed. Ship, say, 1.5MB of CSS, and the site’s performance will absolutely suffer for absolutely everyone. JavaScript is a worse offender on the web when it comes to size and resources, generally, but at least it’s loading is generally deferred.
The idea of “Critical CSS” became hot for a minute, meaning ship as little render blocking CSS as you can, and defer the rest, but that idea has it’s own big tradeoffs. Related to that, it absolutely should be easier to make CSS async, so let’s all vote for that. And while I’m linking to Harry, his The Three Cs: 🤝 Concatenate, 🗜️ Compress, 🗳️ Cache is a good one for your brain.
The times when CSS performance tends to rear it’s head are in extreme DOM weight situations. Like a web page that renders all of Moby Dick, or every single Unicode character, or 10,000 product images, or a million screenshots, or whatever. That way a
Chris’ Corner: PerformanCSS
How CSS relates to web performance is a funny dance. Some aspects are entirely negligible the vast majority of time. Some aspects are incredibly impactful and crucial to consider.
For example, whenever I see research into the performance of some form of CSS syntax, the results always seem to be meh, it’s fine. It can matter, but typically only with fairly extreme DOM weight situations, and spending time optimizing selectors is almost certainly wasted time. I do like that the browser powers that be think and care about this though, like Bramus here measuring the performance of @property for CSS Custom Property performance. In the end, it doesn’t matter much, which is an answer I hope they knew before it shipped everywhere (they almost certainly did). Issues with CSS syntax tend to be about confusion or error-prone situations, not speed.
But even though the syntax of CSS isn’t particularly worrisome for performance, the weight of it generally does matter. It’s important to remember that CSS that is a regular in the is render blocking, so until it’s downloaded and parsed, the website will not be displayed. Ship, say, 1.5MB of CSS, and the site’s performance will absolutely suffer for absolutely everyone. JavaScript is a worse offender on the web when it comes to size and resources, generally, but at least it’s loading is generally deferred.
The idea of “Critical CSS” became hot for a minute, meaning ship as little render blocking CSS as you can, and defer the rest, but that idea has it’s own big tradeoffs. Related to that, it absolutely should be easier to make CSS async, so let’s all vote for that. And while I’m linking to Harry, his The Three Cs: 🤝 Concatenate, 🗜️ Compress, 🗳️ Cache is a good one for your brain.
The times when CSS performance tends to rear it’s head are in extreme DOM weight situations. Like a web page that renders all of Moby Dick, or every single Unicode character, or 10,000 product images, or a million screenshots, or whatever. That way a
box-shadow just has a crazy amount of work to do. But even then, while CSS can be the cause of pain, it can be the solution as well. The content-visibility property in CSS can inform the browser to chill out on rendering more than it needs to up front. It’s not the more intuitive feature to use, but it’s nice we have these tools when we need them.Microsoft Edge Blog
The truth about CSS selector performance
If you're a web developer, you may have already heard that some CSS selectors are faster than others. And you're probably hoping to find a list of the better selectors to use in this article. Well, not quite. But bear with me, I promise that by the
Html codes
Photo
CodePen Blog
Chris’ Corner: The New Web Safe
Back in the day I was a fan of the “Trebuchet MS” font. I didn’t like it large, but set fairly small I loved the look of it. Looked very website-ish — if that makes sense. https://blog.codepen.io/wp-content/uploads/2025/03/Screenshot-2025-03-17-at-11.11.49 AM-1024x396.png Honestly, at 12px, it still looks really nice.
The main reason I would use it is that it was considered a “web-safe” font, meaning most computers had “Trebuchet MS” installed and it would look more or less the same across those computers. On my latest-version macOS, I’ve still got it as a pre-installed system font. https://blog.codepen.io/wp-content/uploads/2025/03/Screenshot-2025-03-17-at-11.16.15 AM-1024x725.png I was thinking about this as Oliver Schöndorfer blogged about it recently. He points out that mobile operating systems changed the math on what is actually “web safe”.
Web-safe fonts system fonts that are pre-installed on most browsers and operating systems. While this was true 15 years ago, when you would find Arial, Times New Roman, Georgia or Verdana on Windows and Apple machines, this drastically changed with the mobile era.
Apparently none of the classic web-safe fonts are actually “web safe” anymore, which I suppose is ironic and kinda funny. I think designers have gotten more used to and OK with some differences in typography across browsers. Modern Font Stacks is a great resource for that. The whole point of a font stack is being cool with the actually used font being whichever one hits first in that list. The whole idea of
Along those lines, I think uifonts.app is a clever idea of looking at fonts in a very practical “app like” way. I like looking at beautiful typeface type specimens as much as the next fella but in the end it matters more what the typeface looks like on my boring thing not your fancy thing. https://blog.codepen.io/wp-content/uploads/2025/03/Screenshot-2025-03-18-at-4.50.25 PM-998x1024.png They should probably add
Quick hits:
* It’s a modern miracle you can drop an image of typography onto a tool and it’ll tell you what fonts are used.
* One of the greatest experiments (that turns out to be perfectly viable) is building syntax highlighting into fonts themselves. Font foundries really need to get on this. Will buy.
* Elliot Jay Stocks recently shared this arranged alphabet and it rules.
* I’ve always shied away from
And some more visuals! https://blog.codepen.io/wp-content/uploads/2025/03/spa-4-sq_600x@2x-1024x1024.webp Spagetty from Dan Cederholm https://blog.codepen.io/wp-content/uploads/2025/03/Screenshot-2025-03-19-at-10.32.38 AM-704x1024.png Citywide by Jason Santa Maria https://blog.codepen.io/wp-content/uploads/2025/03/Screenshot-2025-03-19-at-11.53.15 AM-1024x504.png Revenge Font by DUDE https://blog.codepen.io/wp-content/uploads/2025/03/ramen-1024x861.png Times New Ramen by Seine Kongruangkit
Chris’ Corner: The New Web Safe
Back in the day I was a fan of the “Trebuchet MS” font. I didn’t like it large, but set fairly small I loved the look of it. Looked very website-ish — if that makes sense. https://blog.codepen.io/wp-content/uploads/2025/03/Screenshot-2025-03-17-at-11.11.49 AM-1024x396.png Honestly, at 12px, it still looks really nice.
The main reason I would use it is that it was considered a “web-safe” font, meaning most computers had “Trebuchet MS” installed and it would look more or less the same across those computers. On my latest-version macOS, I’ve still got it as a pre-installed system font. https://blog.codepen.io/wp-content/uploads/2025/03/Screenshot-2025-03-17-at-11.16.15 AM-1024x725.png I was thinking about this as Oliver Schöndorfer blogged about it recently. He points out that mobile operating systems changed the math on what is actually “web safe”.
Web-safe fonts system fonts that are pre-installed on most browsers and operating systems. While this was true 15 years ago, when you would find Arial, Times New Roman, Georgia or Verdana on Windows and Apple machines, this drastically changed with the mobile era.
Apparently none of the classic web-safe fonts are actually “web safe” anymore, which I suppose is ironic and kinda funny. I think designers have gotten more used to and OK with some differences in typography across browsers. Modern Font Stacks is a great resource for that. The whole point of a font stack is being cool with the actually used font being whichever one hits first in that list. The whole idea of
system-ui is like a font stack in a keyword by itself, and particularly well suited to very “app like” websites that are helped by looking like the operating system they are being used on. Maybe the new web safe is just typography that works fine wherever. Or maybe that’s what it always meant.Along those lines, I think uifonts.app is a clever idea of looking at fonts in a very practical “app like” way. I like looking at beautiful typeface type specimens as much as the next fella but in the end it matters more what the typeface looks like on my boring thing not your fancy thing. https://blog.codepen.io/wp-content/uploads/2025/03/Screenshot-2025-03-18-at-4.50.25 PM-998x1024.png They should probably add
system-ui as an option! Quick hits:
* It’s a modern miracle you can drop an image of typography onto a tool and it’ll tell you what fonts are used.
* One of the greatest experiments (that turns out to be perfectly viable) is building syntax highlighting into fonts themselves. Font foundries really need to get on this. Will buy.
* Elliot Jay Stocks recently shared this arranged alphabet and it rules.
* I’ve always shied away from
-webkit-font-smoothing: antialiased; but David Bushell almost has me convinced otherwise as 1) it’s macOS (very literally only) 2) it can make rendered fonts look closer to other operating systems, that is, thinner. My holdup is that I generally like thicker and it will be more consistent for users on that OS. But David is convinced enough to put it in reset stylesheets, so have a think for yourself.And some more visuals! https://blog.codepen.io/wp-content/uploads/2025/03/spa-4-sq_600x@2x-1024x1024.webp Spagetty from Dan Cederholm https://blog.codepen.io/wp-content/uploads/2025/03/Screenshot-2025-03-19-at-10.32.38 AM-704x1024.png Citywide by Jason Santa Maria https://blog.codepen.io/wp-content/uploads/2025/03/Screenshot-2025-03-19-at-11.53.15 AM-1024x504.png Revenge Font by DUDE https://blog.codepen.io/wp-content/uploads/2025/03/ramen-1024x861.png Times New Ramen by Seine Kongruangkit
OpenAI Unveils Native Image Generation in ChatGPT 👨🎨
Today, OpenAI introduced a groundbreaking feature in ChatGPT: native image generation
This new tool enables users to not only create images from scratch but also edit existing ones with precision and detail 👍
What sets it apart?
The AI can now generate visuals without any errors or artifacts—something that has long been a challenge in AI-generated imagery. In addition, the ability to handle multiple files simultaneously is a significant upgrade, making it even more versatile for creative tasks
Starting today, all users will gain access to this exciting new capability ⏰
@aipost 🪙 | Our X 🥇
Today, OpenAI introduced a groundbreaking feature in ChatGPT: native image generation
This new tool enables users to not only create images from scratch but also edit existing ones with precision and detail 👍
What sets it apart?
The AI can now generate visuals without any errors or artifacts—something that has long been a challenge in AI-generated imagery. In addition, the ability to handle multiple files simultaneously is a significant upgrade, making it even more versatile for creative tasks
Starting today, all users will gain access to this exciting new capability ⏰
@aipost 🪙 | Our X 🥇
Which method is used to draw a rectangle on an HTML5 canvas?
Anonymous Quiz
100%
fillRect(x, y, width, height)
0%
drawRect(x, y, width, height)
0%
rectFill(x, y, width, height)
0%
canvasRect(x, y, width, height)
🚀 5 Shocking Facts About How Programming Controls Your Life
1️⃣ AI Is Taking Over Jobs
Automation is replacing cashiers, translators, and even programmers. If you don’t adapt, you risk falling behind.
2️⃣ You Spend 4-6 Hours on Apps Daily
From social media to banking, your life revolves around apps built by programmers.
3️⃣ Hackers Attack Every 39 Seconds
Without strong cybersecurity, your personal data and bank accounts are at risk.
4️⃣ Coding Is the New Literacy
In the digital age, not knowing coding is like being illiterate in the past.
5️⃣ Algorithms Control Your Choices
AI decides what you watch, buy, and even believe through recommendation systems.
💡 Should everyone learn to code? Let’s discuss! ⬇️
1️⃣ AI Is Taking Over Jobs
Automation is replacing cashiers, translators, and even programmers. If you don’t adapt, you risk falling behind.
2️⃣ You Spend 4-6 Hours on Apps Daily
From social media to banking, your life revolves around apps built by programmers.
3️⃣ Hackers Attack Every 39 Seconds
Without strong cybersecurity, your personal data and bank accounts are at risk.
4️⃣ Coding Is the New Literacy
In the digital age, not knowing coding is like being illiterate in the past.
5️⃣ Algorithms Control Your Choices
AI decides what you watch, buy, and even believe through recommendation systems.
💡 Should everyone learn to code? Let’s discuss! ⬇️
📱 iPhone 17 – The Future of Smartphones? 🚀
Apple's iPhone 17 is already generating buzz, even before its official announcement! Here’s what leaks and rumors suggest about this game-changing device:
✅ Ultra-Thin Design – A new iPhone 17 Air model is rumored to be Apple’s slimmest phone ever! (Source)
✅ Camera Revolution – Say goodbye to the old camera bump! The Pro models might feature a rectangular camera bar. (Source)
✅ 120Hz ProMotion Display – Smooth scrolling for all models, not just the Pro versions! (Source)
✅ Apple’s Own 5G Modem – Faster speeds and better battery life! (Source)
✅ Possible iPhone 17 Ultra? – Apple might introduce a premium "Ultra" model with next-level performance. (Source)
⚡ Want to stay updated on the latest iPhone & tech news? Subscribe to @Html_codee now! 👇
🔗 Join us: @Html_codee
👉 What do you think? Which feature excites you the most? Comment below! 💬
Apple's iPhone 17 is already generating buzz, even before its official announcement! Here’s what leaks and rumors suggest about this game-changing device:
✅ Ultra-Thin Design – A new iPhone 17 Air model is rumored to be Apple’s slimmest phone ever! (Source)
✅ Camera Revolution – Say goodbye to the old camera bump! The Pro models might feature a rectangular camera bar. (Source)
✅ 120Hz ProMotion Display – Smooth scrolling for all models, not just the Pro versions! (Source)
✅ Apple’s Own 5G Modem – Faster speeds and better battery life! (Source)
✅ Possible iPhone 17 Ultra? – Apple might introduce a premium "Ultra" model with next-level performance. (Source)
⚡ Want to stay updated on the latest iPhone & tech news? Subscribe to @Html_codee now! 👇
🔗 Join us: @Html_codee
👉 What do you think? Which feature excites you the most? Comment below! 💬