Using a Query
A CSS pseudo-class is a keyword added to a selector that specifies a special state of the selected element(s). For example, :hover can be used to change a button’s color when the user’s pointer hovers over it.
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Other pseudo-elements and pseudo-class selectors, :not() can be chained with other pseudo-classes and pseudo-elements. For example, the following will add a “New!” word to list items that do not have a .old class name, using the ::after
Trivia & Notes
The :not() selector is chainable with more :not() selectors. For example, the following will match all articles except the one with an ID #featured, and then will filter out the articles with a class name .tutorial:
article:not(#featured):not(.tutorial) {
/* style the articles that match */
}
Just like other pseudo-elements and pseudo-class selectors, :not() can be chained with other pseudo-classes and pseudo-elements. For example, the following will add a “New!” word to list items that do not have a .old class name, using the ::after pseudo-element:
li:not(.old)::after {
content: "New!";
color: deepPink;
}
You can see a live demo in the Live Demo section below.
On the Specificity of Selectors
The specificity of the :not() pseudo-class is the specificity of its argument. The :not() pseudo-class does not add to the selector specificity, unlike other pseudo-classes.
The simple selector that :not() takes as an argument can be any of the following:
- Type selector (e.g
p,span, etc.) - Class selector (e.g
.element,.sidebar, etc.) - ID selector (e.g
#header) - Pseudo-class selector (e.g
:first-child,:last-of-type)
Reference
The argument passed to :not() can not, however, be a pseudo-element selector (such as ::before and ::after, among others) or another negation pseudo-class selector.
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| Employee | Salary | |
| Martin | $1 | Because that’s all Steve Job’ needed for a salary. |
| John | $100K | For all the blogging he does. |
| Robert | $100M | Pictures are worth a thousand words, right? So Tom x 1,000. |
| Jane | $100B | With hair like that?! Enough said… |
Useful Fallbacks
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Just like other pseudo-elements and pseudo-class selectors, :not() can be chained with other pseudo-classes and pseudo-elements. For example, the following will add a “New!” word to list items that do not have a .old class name, using the ::after pseudo-element:
element:not(.old)::after {
content: "New!";
color: deepPink;
}
You can see a live demo in the Live Demo section below.
3 comments
This is a great breakdown of where web design is heading. I particularly agree with your point on intentional friction in UX – it’s so easy to chase ‘seamlessness’ that we forget how important it is to guide the user’s focus. Looking forward to seeing how your team implements these styles in your upcoming projects!
Thank you so much for the kind words! We put a lot of heart into this project, and hearing that the interactive elements resonated with you makes it all worth it.
Really appreciated the transparency in this post! Many agencies shy away from discussing the “messy” middle of the strategy phase, but your approach to data-driven storytelling makes a lot of sense 😉