Vertical Percentages in CSS

Vertical Percentages in CSSI don’t think this happens very often. To be honest, I don’t think I’ve ever used a percentage value on a top padding/margin, or a bottom padding/margin value. Even for height values, I may have used a 100% value for a hack, but nothing else.

Nonetheless, using percentages on those vertical parts of a page are somewhat different in the way they are calculated, compared to other properties that take percentage values.

A CSS Book for Beginners

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Jump Start CSS BookThis year I had the pleasure of completing my second book, and the first book that I authored all by myself: Jump Start CSS published by SitePoint.

It’s part of their “Jump Start” series of shorter books that provide an introduction to specific web development and design topics.

SEO for Web Apps (Link Dump)

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SEO for Web AppsIn recent months, I’ve come across a number of links discussing the issue of Search Engine Optmization (SEO) for single page apps or similar complex JavaScript-driven web apps.

This certainly should be a key concern for anyone building these types of projects. So below I’ve compiled two categories of links related to this topic.

jQuery Vertical News Slider

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jQuery Vertical News SliderThe last thing developers need today is another jQuery and/or CSS3 based content slider or carousel. I think the problems with these types of modules have been well documented.

About a year ago, however, I wrote a step-by-step tutorial for Issue #203 of Web Designer Mag that involved creating a “news content switcher”. I’ve been meaning to revisit, tweak, and release the code for that here and so I finally got around to it.

384 Pages of CSS

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CSS E-BooksDue to the prevalence of ad-blockers, ads as a means to support online content is becoming a less effective method with each passing month.

Selling ads on a blog like this one is not easy, and resorting to backfilling missing ad-spots for ugly Google Ads is less than satisfying. I hope I can one day remove all ads from this website and still continue to produce content regularly.

To begin the process of reaching that goal, I’ve put together 3 CSS E-Books in PDF format containing a collection of CSS-based articles that I’ve published here on this website. Below are links to view a description and table of contents for each e-book:

Language-wide Features in CSS

Language-wide Features in CSSIn addition to the unique property/value pairs that CSS offers, there are also a small handful of language-wide features that can come in handy, including a few that are brand new in the spec.

These often go unnoticed, especially by beginners, because when CSS properties and their possible values are discussed (in tutorials, books, or even in the spec), these features are usually omitted for brevity.

The Minimum Code for a CSS Transition

transition-durationHere’s something interesting that you may not have realized about CSS3 transitions. Normally, you’ll see a transition declared by utilizing three different properties, either in longhand or shorthand.

In both cases, we’re explicitly declaring three of the four transition-related properties (leaving out transition-delay). Can a transition occur with less code than that? Well, yes.

What’s the Status of the ::selection Pseudo-element?

::selection pseudo-elementEver since HTML5 Boilerplate put the ::selection pseudo-element on the map, so to speak, most CSS developers nowadays have been including this selector as part of their universal styles.

To get cross-browser support, the ::selection pseudo-element (which is used to change styles on highlighted, or selected, text) is declared like this: