Magic Numbers in CSS. Magic numbers in CSS refer to values which "work" under some circumstances but are frail and prone to break when those circumstances change.
They are usually always related to fonts in some way or another. They are created by an author who likely only tested in their own browser under ideal conditions. Let's take a look at some examples so we all know what they are and hopefully can avoid them in the future. Look at this simple set of tabs: Each of the tabs is set to width: 100px;. A bit awkward and likely undesirable. FIXED! font-face rendering incorrectly in Chrome. For a while now web designers have been tackling the issue of fonts on the web.
It surely would be all too easy if there was only one Web font format out there. Instead, there’s quite a variety, as you will get to know in this article.
An Introduction To LESS, And Comparison To Sass - Smashing Magazine. Advertisement I’ve been using LESS1 religiously ever since I stumbled upon it months ago.
Update 01/11/12: new code at the bottom of this post.
Sass has been kicking around for a while, but I hadn’t given it a try until just recently. Sass usually goes hand-in-hand with Rails, Compass makes it so easy to run Sass on standalone projects that I’ve started using it on nearly everything. The result is faster, DRYer, more enjoyable coding. The biggest benefit for me has been Compass’s sprite generation, which — if done right — can cut down your coding time and filesize. Sprites are an optimization best practice, but they’re no fun to work with. Don’t use IDs in CSS selectors? ❧ Oli.jp (@boblet) Recently I came across the post by Matt Wilcox called CSS Lint is harmful, ranting about the useful free tool CSS Lint.
The 30 CSS Selectors you Must Memorize. CSS3 Solutions for Internet Explorer - Smashing Magazine. Advertisement Experienced developers understand that CSS3 can be added to new projects with progressive enhancement in mind.
This ensures that content is accessible while non-supportive browsers fall back to a less-enhanced experience for the user. But developers could face a situation where a client insists that the enhancements work cross-browser, demanding support even for IE6. In that case, I’ve collected together a number of options that developers can consider for those circumstances where support for a CSS3 feature is required for all versions of Internet Explorer (IE6, IE7, & IE8 — all of which are still currently in significant use). Opacity / Transparency. iPad Orientation CSS (Revised) - desideratum.
Ie7nomore.com, just another CSS playground. CSS - Contents and compatibility. CSS > selection styles. A new micro clearfix hack. The clearfix hack is a popular way to contain floats without resorting to using presentational markup.
This article presents an update to the clearfix method that further reduces the amount of CSS required. Demo: Micro clearfix hack Known support: Firefox 3.5+, Safari 4+, Chrome, Opera 9+, IE 6+ The “micro clearfix” method is suitable for modern browsers and builds upon Thierry Koblentz’s “clearfix reloaded”, which introduced the use of both the :before and :after pseudo-elements. Here is the updated code (I’ve used a shorter class name too): This “micro clearfix” generates pseudo-elements and sets their display to table.
Including the :before selector is not necessary to clear the floats, but it prevents top-margins from collapsing in modern browsers. It ensures visual consistency with other float containment techniques that create a new block formatting context, e.g., overflow:hiddenIt ensures visual consistency with IE 6/7 when zoom:1 is applied.