Álvaro Montoro
@alvaromontoro.com
📤 1986
📥 311
📝 1685
Software Engineer | HTML, CSS, and other web things Microsoft MVP 100% not an alien
Post by did:plc:xei4kpuuaogvgnvufre7wvjm
about 2 hours ago
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Surprised no one has come up yet with the classic slider. It's ugly and all, but it helps _easily and accurately_™ pick a date within [-200,+200] of today. That should be acceptable, no?
codepen.io/alvaromontor...
#BadUXWorldCup
#html
#css
add a skeleton here at some point
about 4 hours ago
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Álvaro Montoro
Aleksandr
about 18 hours ago
> Writing an article > Hey I should explain some background knowledge first > Hmm, maybe that should be its own article > Neither article gets written
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I did a single-div CSS Art based on today's inktober prompt: Sting.
codepen.io/alvaromontor...
#inktober
#divtober
#sting
about 17 hours ago
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OS + System Data basically taking half of my hard drive... Ugh!
about 19 hours ago
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Álvaro Montoro
Ana Tudor
about 24 hours ago
Please stop setting `width: 100vw` on the `body`. It's unnecessary. By default, the `body` stretches horizontally as much as necessary. It's problematic. Setting `width: 100vw` on it can cause overflow even if you remove the default `margin`... because the page may have a scrollbar.
#CSS
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Practical visualization of how using robots.txt works to prevent AI bots from going through your site.
1 day ago
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Any recommendations for newsletter services? (Free for beginners if possible)
2 days ago
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Álvaro Montoro
CSS by T. Afif
2 days ago
💡 CSS Tip! A simple line of modern CSS to create a conditional Border Radius. The value will adjust based on either the container width or screen width.
css-tip.com/conditional-...
cc
@ishadeed.com
@una.im
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Álvaro Montoro
Raul Jimenez Ortega
9 days ago
¡Volvemos a la carga! 💪 . El martes 14 de octubre a las 17:00 daremos una charla (ONLINE) para madres, padres y tutores. Hablaremos sobre qué está ocurriendo en Internet (redes sociales, juegos online, etc.). 🎯 Objetivo: informar, dar herramientas útiles y resolver dudas.
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- You finished the task already? - Yes, AI made development so fast - Nice! Let's chec... Wait... What's that? - What? - The copy doesn't match design - Oh, that's the copy AI generated - We need the copy from design - Ok - ...And the spacing looks off - Oh, that's the spacing AI generated ... 😖
3 days ago
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Álvaro Montoro
Vale
4 days ago
Amit Sheen (
@amitsheen.bsky.social
) loves pushing the web platform to the limits, particularly when it comes to CSS. He posts some fantastic demos and often follows them up with insightful, informative breakdowns. His 3D layered text series on
@css-tricks.bsky.social
is fantastic.
#ValePromotes
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Álvaro Montoro
The Daily Show
4 days ago
Trump Dangles Shutdown Paychecks, FAA Stretches Thin & FBI Looks for Amelia Earhart
www.youtube.com/watch?v=TyMZ...
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Trump Dangles Shutdown Paychecks, FAA Stretches Thin & FBI Looks for Amelia Earhart | The Daily Show
YouTube video by The Daily Show
https://www.youtube.com/watch?v=TyMZGI6TVnw
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Álvaro Montoro
Ana Tudor
3 days ago
Because someone just hearted this demo I made over half a decade ago on
@codepen.io
:
codepen.io/thebabydino/...
It's a pure
#CSS
Platonic solids gallery. They animate on hover/ tap. All is computed, there are no magic numbers.
#Maths
#3D
#Geometry
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Pure CSS Platonic solids gallery (fully responsive, hover/ tap to animate)
Both the shapes and the shading are pure CSS. The polygonal faces are created using `clip-path`, so the demo only works in modern browsers supporting t...
https://codepen.io/thebabydino/pen/bGEBObR
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Don't forget to breathe .................................................................................................................................................................................................................................................................................. 🤬
4 days ago
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Happy Walk, Bike & Roll to School Day to all who celebrate!
4 days ago
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reposted by
Álvaro Montoro
henry ✷
5 days ago
using 4 lines of CSS to fix a full-sprint JS bug
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Álvaro Montoro
CSS by T. Afif
6 days ago
Here is my idea with less of code
css-tip.com/tooltip-anch...
The trick is to play with the margin property to show/hide the arrows. cc
@una.im
@bram.us
add a skeleton here at some point
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Coworker: How would you approach this component with CSS? Me: Oh, yes! Take a seat, let's talk about data-attributes, pseudo-elements, and the dark art of inline-grid... Wait... Where are you going? Don't go!
5 days ago
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If one of your mutuals was an AI really good at impersonating a human, who would it be? Someone you have chatted with, DMed, maybe even shared a video call... but never seen in person (photos and video don't count.)
5 days ago
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reposted by
Álvaro Montoro
Also posted on: DEV (open):
dev.to/alvaromontor...
Medium:
alvaromontoro.medium.com/10-cool-code...
In case you prefer those platforms.
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10 Cool CodePen Demos — September 2025
A collection of 10 cool and exciting front-end demos shared on CodePen during September 2025
https://alvaromontoro.medium.com/10-cool-codepen-demos-september-2025-ca64d3b2ad78
7 days ago
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The process of losing 60lb starts with a single salad.
5 days ago
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Álvaro Montoro
comiCSS
6 days ago
Higher-order functions in CSS
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Is the Bluesky android app really buggy or is it my phone? Half the time I click on a post or a picture, it won't open. Especially when it's on a notification. The other half that works is usually because I restarted the app. The web experience is considerably smoother (even on mobile).
6 days ago
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Everyone who confuses correlation with causation ends up dead.
6 days ago
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Half my job when helping junior developers could be templated into "Did you know there's a native API that does that and is widely supported [link to MDN]?"
6 days ago
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Álvaro Montoro
comiCSS
7 days ago
New comic strip: One Last PR
comicss.art/comics/215/
#css
#comic
#webdev
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Álvaro Montoro
T3chFest
6 days ago
Seguimos recibiendo propuestas para T3chFest 2026 que será el 12 y 13 de marzo en la
@uc3m.es
. Cualquier persona puede proponer sobre cualquier tema relacionado con la tecnología.
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Call for Talks - T3chFest 2026
Propón una charla para T3chFest 2026. 12 y 13 de marzo de 2026.
https://t3chfest.es/2026/call-for-talks
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Álvaro Montoro
10 Cool Codepen Demos from September 2025: Squircles, shadows, components, clocks made out of clocks, generative art, shaders, animations... and more!
alvaromontoro.com/10-cool-code...
#webdev
#javascript
#html
#css
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10 Cool CodePen demos
10 Cool CodePen demos from September 2025
https://alvaromontoro.com/10-cool-codepen-demos/2025/09/
7 days ago
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Idea for a series of Web conferences/meetups with a focus on vanilla technologies, standards, accessibility, creative coding... They'd be categorized by levels based on scope and impact: <h6> Corporate/Online <h5> City/Town <h4> County/Province <h3> State/Region <h2> National <h1> International
7 days ago
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10 Cool Codepen Demos from September 2025: Squircles, shadows, components, clocks made out of clocks, generative art, shaders, animations... and more!
alvaromontoro.com/10-cool-code...
#webdev
#javascript
#html
#css
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10 Cool CodePen demos
10 Cool CodePen demos from September 2025
https://alvaromontoro.com/10-cool-codepen-demos/2025/09/
7 days ago
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Sushi, Japanese snacks, and the 1954 Gojira movie with the kids. This is going to be a fun night.
8 days ago
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My talk at the Commit Your Code '25 talk is already available on YouTube:
m.youtube.com/watch?v=Boly...
#cyc25
#webdev
#javascript
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Playing with the Gamepad API: Using Game Controllers with JS - Alvaro Montoro
YouTube video by Dallas Software Developers
https://m.youtube.com/watch?v=BolyaxTjF6o
8 days ago
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Álvaro Montoro
FOOL KOOL
9 days ago
#666 Wears Prada
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2001: a space-between odyssey _ Swap a word in a movie title with an HTML or CSS keyword to create a horror flick for back-end devs.
add a skeleton here at some point
9 days ago
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Álvaro Montoro
comiCSS
9 days ago
(Pumpkin) Spicing things up a little this month of October by turning the characters into skeletons... kind of...
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Álvaro Montoro
comiCSS
9 days ago
Free and paid Patreon members got access to a special "spooktober" cartoon:
www.patreon.com/posts/140358...
Log in, follow the comiCSS account (no need to pay or subscribe), and you'll be able to see the comic :)
#css
#earlyaccess
#comic
#comicss
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Spooktober | comiCSS
Get more from comiCSS on Patreon
https://www.patreon.com/posts/140358430
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Just received feedback from my Commit Your Code '25 talk, and the results and comments are positive and encouraging. I was nervous about presenting in person (I'm self-conscious about my body and overweight), but the experience turned out really well. I may try to do more of these in the future.
9 days ago
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Álvaro Montoro
Kevin Powell
10 days ago
Do you have any smaller/under-the-radar CSS sites/people that you follow? Looking for blogs, YouTube channels, or anyone who just shares cool CSS stuff. Reply if you know any, and look at the replies for new people/sites to follow 😊
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One thing that amazes me about AI is the dissonance between public and private talk about it. Publicly, AI is accepted and pushed into everything: most tech conferences are AI dominated and employers push for its use... At the same time, and this may be anecdotal, developers raise concerns privately
10 days ago
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What is a good place to look for conferences and CFP? (especially web technologies) I usually look at
Sessionize.com
(too generic?) or
cfp.watch
(with a more European focus?) Mastodon and Twitter (not visiting much there) is/were good, and more active than Bluesky for that.
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All active call for papers - CfP Watch
A collection of open Call for Papers for (aspiring) speakers.
https://cfp.watch
10 days ago
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An old
@codepen.io
collection: CSS Simpsons.
codepen.io/collection/D...
If I had to code them today, I'd do it in a completely different way (if at all). Fun fact, they helped me land a job: I shared them on LinkedIn, a former coworker saw them, needed a CSS expert, reached out... and it worked out
10 days ago
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Álvaro Montoro
Frontend Masters
10 days ago
Inset Shadows Directly on img Elements (Part 1) Inset `box-shadow` doesn't work directly on . There are work-arounds, but this SVG filter can do it directly. Don't run! There is powerful stuff to learn here through interactive demos.
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Inset Shadows Directly on img Elements (Part 1)
Inset `box-shadow` doesn't work directly on . There are work-arounds, but this SVG filter can do it directly. Don't run! There is powerful stuff to learn here through interactive demos.
https://frontendmasters.com/blog/inset-shadows-directly-on-img-elements-part-1
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Álvaro Montoro
Bramus
10 days ago
Have you seen
www.bram.us/2023/05/09/r...
? Extend it with a MutationObserver (or StyleObserver) and you can have it auto-transition :)
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Rearrange / Animate CSS Grid Layouts with the View Transition API
Animate elements in a grid layout as new items are added, items change size, etc.
https://www.bram.us/2023/05/09/rearrange-animate-css-grid-layouts-with-the-view-transition-api/
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Álvaro Montoro
comiCSS
11 days ago
October 1st...
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If life gives you oranges, you may be colorblind.
11 days ago
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Is there a smooth way to animate grid positions across rows in a CSS grid? I've seen many examples in which the cells in a grid are animated, but it always happens with elements in the same row. Is there a way to animate them nicely across rows?
11 days ago
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Álvaro Montoro
BrainTool
11 days ago
Love this fresh take on BrainTool from
#Productivity
Guru Santi Younger!
#productivityhacks
#Browser
youtu.be/C6z_4ZjSrbs?...
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Too Many Tabs? Messy Bookmarks? Meet BrainTool
YouTube video by Santi Younger
https://youtu.be/C6z_4ZjSrbs?si=4QqxhyhkIf_ka23-&t=1
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Álvaro Montoro
comiCSS
11 days ago
comiCSS #140: Framework Fans vs Framework Bros
comicss.art/comics/140/
May 13, 2024 – This comic wasn't in the resharing pipeline until later, but given recent news and reactions from some popular framework, it seemed like a good fit for this week.
#css
#js
#webdev
#framework
#cartoon
#joke
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Álvaro Montoro
Ana Tudor
12 days ago
Good grief... Remember: if everything is `!important`, nothing is `!important`.
#CSS
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