demosthenes.info

I’m Dudley Storey, the author of Pro CSS3 Animation. This is my blog, where I talk about web design and development with , and . To receive more information, including news, updates, and tips, you should follow me on Twitter or add me on Google+.

web developer guide

my books

Book cover of Pro CSS3 AnimationPro CSS3 Animation, Apress, 2013

my other blogs

Massive Head Canon: Intelligent discussion of movies, books, games, and technology.

my projects

A Sass color keyword system for designers. Replaces CSS defaults with improved hues and more memorable, relevant color names.

CSSslidy: an auto-generated #RWD image slider. 3.8K of JS, no JQuery. Drop in images, add a line of CSS. Done.

tipster.ioAutomatically provides local tipping customs and percentages for services anywhere.

Summer Sale Now On

HTML5 Video Effects with CSS Blend Modes

css / blend modes

Estimated reading time: 2 minutes

Traditional video effects such as filters, cross-fades and blends are usually applied in an editing application, such as Adobe Premiere or Apple’s Final Cut. While there are obvious advantages to such a process, any changes made in an editor are “baked in” to each video frame, and can’t be manipulated or undone once the video is exported.

Yesterday, teaching a class in HTML5 multimedia, I realized that by using CSS filters and the newer it would be possible to duplicate many of the simpler video effects directly in CSS: the <video> element is like any other, and is equally affected by filter and mix-blend-mode on supporting browsers. This shifts the rendering task onto the GPU of the machine, but the result can still be surprisingly effective.

Code and Keys in HTML: Using the code, var, samp and kbd elements

html / typography

Estimated reading time: 1 minute, 45 seconds

HTML was originally designed to display technical documents, so it’s not surprising that there are several elements devoted to marking up programming examples and instructions on web pages. Some of these elements are fairly well known; others are relatively rare. As always, knowing the tags and their correct use expands any developer’s fluency in :

A banner of popular favicons

Web Developer Reading List: Favicons

reading lists / html

Estimated reading time: 1 minute

Favicons are the central icons of web development, and one of the finishing touches to any professionally-designed website. They started off as 16 x 16 pixel icons almost 20 years ago, but have since grown in both size and variety.

This site helps millions of visitors while remaining ad-free. For less than the price of a cup of coffee, you can help pay for bandwidth and server costs while encouraging further articles.