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Build a motion activated security camera, with WebRTC, canvas and Device Orientation

John Allsop uses an old iMac and the browser to snap a picture through a web cam and then email it when it detects movement.…

June 8, 2013

Using requestAnimationFrame

There used to be just one way to do a timed loop in JavaScript: setInterval(). If you needed to repeat something pretty fast (but not as-fast-as-absolutely-possible like a for loop), you'd use that. For the purposes of animation, the …

June 8, 201319 comments

A Couple of Use Cases for Calc()

calc() is a native CSS way to do simple math right in CSS as a replacement for any length value (or pretty much any number value). It has four simple math operators: add (+), subtract (-), multiply (*), and divide …

June 5, 201335 comments

Grids with text-align: justify

Patrick Kunka demos how fluid grids can be created with percentage widths and justified text. I like it because you don't need to think about gutter calculations which is what really complicates grids. If you need specific control over gutters, …

June 3, 2013

Sass Style Guide

With more people than ever writing in Sass, it bears some consideration how we format it. CSS style guides are common, so perhaps we can extend those to cover choices unique to Sass.

Here are some ideas that I've been …

May 29, 201393 comments

3D Button Parallax

The following is a guest post by Alexander Futekov. We recently published an article by Joshua Bader in which a 3D inset look was adjusted as the page scrolled to give it a more realistic interaction. This is similar only

May 27, 201333 comments

Upping Your Type Game

The ultimate primer on web type for web developers by Jessica Hische.…

May 24, 2013

Just One of Those Weird Things About CSS: Background on <body>

So you want to make the background of your website red eh? You'll probably put this in your CSS:

body { background: red; }

Done!

Check out this Pen!

You're going about your business and then all the sudden one …

May 24, 201340 comments

This Website Brought To You By…

I always wanted to write something on all the technologies that a website relies on in order to have been created and work. My attempts have so far failed because it spirals out of control so quickly. Kevin Kelly sums …

May 24, 2013

Logic in Media Queries

Just in case you have brain farts about this constantly like I do.

If

That's what media queries are: logical if statements. "If" these things are true about the browser, use the CSS inside.

And

The keyword and.

@media
May 22, 201338 comments

CSS-Tricks Chronicle XIII

> go east > You see a beautiful grassy field. > set up camper > You camper is now set up [roundtime: 18 seconds] > sit down
May 21, 20135 comments

Prepros

Is an open-source app modeled after CodeKit. Prepros runs on Windows where CodeKit is Mac only. From people who have tried it, it seems good.…

May 20, 2013

Chrome’s requestAutocomplete()

Auto-filling forms is nice because it saves time and is less prone to user error. Even better is not even needing to see a form in the first place.…

May 20, 2013

Replace the Image in an <img> with CSS

The following is a guest post by Marcel Shields. Marcel in a difficult place where he needed to change the image on a page but didn't have access to the HTML. Rare, but I'm sure we've all be in

May 20, 201347 comments

Slider with Sliding Backgrounds

Among the many super nice design features of the Yahoo! Weather app for iOS is the transition between city screens. The background image doesn't just move away as the screen moves from one screen to the next, the background image …

May 17, 201360 comments

Photo Swivel

The following is a guest post by Alex Young (@the_alexyoung). Alex has created a simple technique to "rotate" the subject of a photo simply by hiding and showing multiple stacked photographs taken at different angles. Enjoy!

Web designers …

May 15, 201338 comments

Media Query Change Detection in JavaScript Through CSS Animations

The following is a guest post by Alessandro Vendruscolo. Media queries are relevant to both CSS and JS. The need and desire to manage those in one place is real. There have been some clever ways to do this,

May 14, 201311 comments

Naming Media Queries

It would be pretty cool if we could do this someday in CSS. The best idea for it that I've come across is to define it in a <meta> tag in the <head>. That way (perhaps) CSS could use …

May 9, 201363 comments

Line Clampin’ (Truncating Multiple Line Text)

You want X lines of text. Anything after that, gracefully cut off. That's "line clamping" and it is a perfectly legit desire. When you can count on text being a certain number of lines, you can create stronger and more …

May 7, 201329 comments

CSS Zen Garden

It's back.…

May 7, 2013

How to mark up subtitles

Now that <hgroup> is gone, use a <span> inside the main header, or group them with <header> and use a <p> for the subtitle.…

May 6, 2013

Making accessible icon buttons

Comprehensive research by Nicholas C. Zakas on the correct markup to make a graphic-only button accessible.…

May 6, 2013

3D Inset Parallax Effect

The following is a guest post by Joshua Bader. Joshua noticed that certain 3D effects on the web could benefit from adjusting perspective as the web page is scrolled. I'll let him explain.

People love to make flat things …

May 4, 201333 comments

Make Client Side Data Available Server Side

That would be pretty useful, right? Right now it's very common to User Agent "sniff" when you want to make a server-side decision about what to give the client. But UA sniffing has always sucked and sucks more every day. …

April 28, 201352 comments

WebP with Fallback

WebP images will save a quarter to a third of the file size over PNG or JPG. Not all browsers are going to support it, but Bruce Lawson shares a way we can use it in such a progressive enhancement …

April 28, 2013

The CSS-Tricks License

Sometimes people ask me if they can use the stuff they find here. So I thought I'd create a license I can refer them to. …

April 28, 2013

CSS3 Overflow

Not the most glamorous property is it? But it just might turn out to be. Things like paginated overflow and overflowing into fragments, each of which is selectable and style-able. Could be pretty powerful! Like replacing sliders with browser native …

April 23, 2013

Magic Numbers in CSS

Despite the super fun sounding name, magic numbers are a bad thing. It is an old school programming term for "unnamed numerical constant". As in, just some number plunked into the code that is probably vital to things working correctly …

April 22, 201335 comments

WP Migrate DB Pro

I think the most common tech question we get on ShopTalk show is how to keep a WordPress database in sync between live and local. This (paid) plugin can do it right from one admin screen to another by POSTing …

April 17, 2013

Preventing the Performance Hit from Custom Fonts

The issue is 1) custom fonts are awesome and we want to use them 2) custom fonts slow down our pages by being large additional resources. Dealing with this has been in the air recently so I thought I'd round …

April 17, 201338 comments

Line-On-Sides Headers

Forums user McAsh wondered how they might code up a design in which there was a large header and a smaller subheader beneath it which featured double horizontal lines jutting out after the text to both the left and right …

April 16, 201349 comments

List of Pseudo-Elements to Style Form Controls

Like the little handle on range inputs. You can style that, but it's different in all the major browsers. It's either ::-ms-thumb, ::moz-range-thumb, or ::-webkit-slider-thumb. Obviously an area that would benefit from standardization. …

April 16, 2013

Transitional Interfaces, Coded

Pasquale D’Silva’s article Transitional Interfaces has really been making the rounds. It's a quick read that drives home a great point. Transitions and animations can be more than eye candy. They can help give your brain a clue about what …

April 11, 201324 comments

csscss

A CSS redundancy analyzer that analyzes redundancy.

Gives you output like:

{.contact .content .primary} and {article, #comments} share 5 rules

If you have multiple selectors sharing five or more rules (properties with the same value), that's likely a good opportunity …

April 11, 2013

Can You “Over Organize” JavaScript?

There's no question that on sites with lots of JavaScript, you need a strict organizational pattern to keep everything making sense and the code approachable. I've mentioned in the past I like grouping things into individual files each containing a …

April 10, 201342 comments

CSS-Tricks Chronicle XII

SITEOWNR: Thers new ifnormation inthe site foryou. (puts on sunglasses). STRETEMAN: yesyes Im hapy !
April 8, 201314 comments

Body Border, Rounded Inside

Reader Arun wrote in with a question on how to make a body border that was rounded where the edges met on the inside. Like this. We've covered body borders before, but this was slightly different.

It does look rather …

April 5, 201336 comments

Blink

Chrome is going to use "Blink" as a rendering engine now, a fork of WebKit. I imagine the Chromium team will stop committing back to WebKit, so that project will stagnate a bit. Safari is already rather slow to update, …

April 3, 2013

Pop Hovers

POP has these cool hovers in the boxes that make up their homepage. The boxes have a white background by default, and as you hover over them a dark background slides up behind, the text colors change, and the text …

April 3, 201348 comments

Repoll! Whose Responsibility is “Mobile” Design?

In this first time ever in CSS-Tricks history, we're going to re-run the same poll we've ran in the past. Now, more than five years after the original poll, we're going to ask:

What is your opinion as to …

April 2, 201345 comments

SVG Patterns Gallery

Using SVG for background patterns is great because they 1) are very small 2) are vector, thus crisp at any screen resolution and 3) work in IE 9 (unlike gradients). Gallery by Philip Rogers.…

April 1, 2013

Poll Wrapup: How Much Effort Do People Put Into Alt Text?

From over 16,000 people surveyed, more than half (54%) say they "do some" when it comes to alt text for images that are important to content. The example provided did provide insight into the content and relevance of the image.…

April 1, 201320 comments

The State of Spinners

If you need to indicate "please wait, something is happening" on a website, a spinner has long been the go-to choice. Probably an animated GIF, although there are other options like CSS animations, apng, SVG, or canvas. James Padolsey …

March 31, 2013

Brand New Series in The Lodge: Building a Mobile-First WordPress-Powered Artists Website

I finished up a brand new series in The Lodge! It's all about building a website from scratch. My friend Jeff, the ceramic artist's website, to be specific.

It is a 40-video series that goes from a blank …

March 29, 201319 comments

Slide In (as you scroll down) Boxes

I was playing with my new Nexus 7 (I really wanted to own a real Android device) and I noticed a neat little effect in the Google+ app that comes with it. As you swipe down, new modules of content …

March 27, 201368 comments

You Can Transition z-index

Zoe Gillenwater reminds us it's just a number, so why not? So obviously I made this dumb wall-phasing ghost. …

March 27, 2013

Let’s Say FeedBurner Shuts Down…

A lot of us around here have blogs and a lot of us use FeedBurner to "host" our RSS feeds. I thought it was worth talking about what might happen if we lose FeedBurner, which seems especially likely these …

March 26, 201351 comments

Printing the Web

Hans Christian with the state of web printing. All the old classics are still important, like display: none; on irrelevant stuff (like navigation) and using pseudo elements to display the URL's of links. But there are new kids on the …

March 25, 2013

Line Number Mapping for Sass in Chrom Dev Tools

I've always wanted to get this going since seeing this Lennart Schoors post, but this Lee Mallabone tutorial finally pushed me to do it. The debug settings are specific to Rails, but if you're a CodeKit users you probably …

March 25, 2013

Hang On Placeholders

The way that placeholder text works on inputs and textareas is either that 1) the placeholder text disappears immediately when the empty input is focused or 2) the placeholder text stays until actual text is entered. Perhaps a middle ground could also make sense.
March 25, 201345 comments

*May or may not contain any actual "CSS" or "Tricks".