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CSS Selectors are Conditional Statements

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One Invalid Pseudo Selector Equals an Entire Ignored Selector

Perhaps you know this one: if any part of a selector is invalid, it invalidates the whole selector. For example:

div, span::butt {
  background: red;
}

Even though div is a perfectly valid selector, span:butt is not, thus the entire selector is invalidated — neither divs nor span::butt elements on the page will have a red background.… Read article

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Selectors That Depend on Layout

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“Stop Using CSS Selectors for Non-CSS”

I saw Nicole Dominguez tweet this the other day:

I wasn't at this conference, so I have very little context. Normally, I'd consider it a sin to weigh in on a subject brought up by looking at two out-of-context slides, but I'm only weighing in out of interest and to continue the conversation.… Read article

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inStyle (Modifying the Current Selector `&` in Sass)

The following is a guest post by Filip Naumovic from Salsita Software. Filip has built a Sass tool to help with an issue I know I've experienced many times. You're happily nesting in Sass. You're maybe a level or two deep, and you need to style a variation based on some parent selector. You need to either break out of the nesting and start a new nesting context, or go nuclear with @at-root. I'll let Filip tell Read article

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Meet the Pseudo Class Selectors

Pseudo class selectors are CSS selectors with a colon preceding them. You are probably very familiar with a few of them. Like hover:

a:hover {
  /* Yep, hover is a pseudo class */
}

They are immensely useful in a variety of situations. Some of them are CSS3, some CSS2... it depends on each particular one. Outside of IE, they have great browser support. In IE land, even IE8, support is pretty barren. However, the IE9 preview has full support Read article

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