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There is a such thing as an indeterminate checkbox value. It’s a checkbox (<input type="checkbox">) that isn’t checked. Nor is it not checked. It’s indeterminate.

We can even select a checkbox in that state and style it with CSS!

Some curious points though:

1. It’s only possible to set via JavaScript. There is no HTML attribute or value for it.
2. It doesn’t POST (or GET or whatever else) or have a value. It’s like being unchecked.

So, …

The post POSTing an Indeterminate Checkbox Value appeared first on CSS-Tricks.

There’s a ton of very quotable stuff from Rachel Andrew’s latest post all about CSS and how we talk about it in the community:

CSS has been seen as this fragile language that we stumble around, trying things out and seeing what works. In particular for layout, rather than using the system as specified, we have so often exploited things about the language in order to achieve far more complex layouts than it was ever designed for. We had to, …

The post The Way We Talk About CSS appeared first on CSS-Tricks.

WordPress 5.0 is quickly approaching, and the new Gutenberg editor is coming with it. There’s been a lot of discussion in the WordPress community over what exactly that means for users, designers, and developers. And while Gutenberg is sure to improve the writing experience, it can cause a bit of a headache for developers who now need to ensure their plugins and themes are updated and compatible.

One of the clearest ways you can make sure your theme is …

The post Styling the Gutenberg Columns Block appeared first on CSS-Tricks.

There is a content property in CSS that’s made to use in tandem with the ::before and ::after pseudo elements. It injects content into the element.

Here’s an example:

.email::before {
content: attr(data-done) " Email: "; /* This gets inserted before the email address */
}

The property generally takes anything you drop in there. However, there are some invalid values it won’t accept. I heard from someone recently who was confused by this, so …

The post Valid CSS Content appeared first on CSS-Tricks.