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CSS is fun and cool and I like it.
Article

Hide Scrollbars During an Animation

CSS still can’t animate to auto dimensions.

.dropdown {
  transition: 0.2s;
  height: 0;
}
.dropdown.open {
  /* the height will change, but it won't animate. */
  height: auto;
}

There is JavaScript trickery you can try. Brandon Smith outlined several techniques here a little while back. My mind always goes to this solution just because it’s so simple:… Read article “Hide Scrollbars During an Animation”

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“weeds of specificity”

Article

What’s the Difference Between Width/Height in CSS and Width/Height HTML attributes?

Some HTML elements accept width and height as attributes. Some do not. Those attributes are sometimes referred to as presentational attributes. The thing to know about them is that they are overridden by any other styling information whatsoever. That makes them ideal as a fallback.
Article

The Order of CSS Classes in HTML Doesn’t Matter

That’s right! And I can prove it, too. Let’s look at some CSS first:

.a {
  color: red;
}

.b {
  color: blue;
}

And now let’s look at some markup:

<div class="a b">Here’s some text</div>

The text is going to be blue because .b is defined last in the CSS, right? But what if we go about and switch the order in which those classes are called in HTML:

<div class="b a">Here’s some text</div>

What color do you think … Read article “The Order of CSS Classes in HTML Doesn’t Matter”

Article

How much specificity do @rules have, like @keyframes and @media?

I got this question the other day. My first thought is: weird question! Specificity is about selectors, and at-rules are not selectors, so… irrelevant?

To prove that, we can use the same selector inside and outside of an at-rule and see if it seems to affect specificity.… Read article “How much specificity do @rules have, like @keyframes and @media?”

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Simplify Styling with Functional CSS

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All Fired Up About Specificity

You never know where the next Grand Debate™ in front-end is going to come from! Case in point: we just saw one recently based on a little Twitter poll by Max Stoiber in which 57% of people got it wrong. There were reactions ranging from the innocuous hey fun a little brain teaser! to the state of web education is in shambles and beyond.… Read article “All Fired Up About Specificity”

Article

Combining the Powers of SEM and BIO for Improving CSS

CSS is easy, some might argue, but that “easiness” can cause messy code. This is especially true through power of preprocessors like Sass or Less where, if you aren’t careful, your CSS can become harder to deal with instead of easier. Sass? Harder? This Gist shows a great example of Sass nesting hell.

If your Sass code looks like that, you can definitely improve your code with SEM & BIO, a CSS technique I’ll introduce you to now!… Read article “Combining the Powers of SEM and BIO for Improving CSS”

Article

CSS Basics: The Second “S” in CSS

CSS is an abbreviation for Cascading Style Sheets.

While most of the discussion about CSS on the web (or even here on CSS-Tricks) is centered around writing styles and how the cascade affects them, what we don’t talk a whole lot about is the sheet part of the language. So let’s give that lonely second “S” a little bit of the spotlight and understand what we mean when we say CSS is a style sheet.… Read article “CSS Basics: The Second “S” in CSS”

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Strategies for Keeping CSS Specificity Low

Keeping CSS specificity low across all the selectors in your project is a worthy goal. It’s generally a sign that things are in relative harmony. You aren’t fighting against yourself and you have plenty of room to override styles when you need to. Specificity on selectors tends to creep up over time, and there is a hard ceiling to that. I’m sure we’ve all felt the pain of !important tags and inline styles.

So how do we keep that specificity … Read article “Strategies for Keeping CSS Specificity Low”