Book Image

Designing Next Generation Web Projects with CSS3

By : Sandro Paganotti
Book Image

Designing Next Generation Web Projects with CSS3

By: Sandro Paganotti

Overview of this book

CSS3 unveils new possibilities for frontend web developers: things that would require JavaScript, such as animation and form validation, or even third party plugins, such as 3D transformations, are now accessible using this technology."Designing Next Generation Web Projects with CSS3" contains ten web projects fully developed using cutting edge CSS3 techniques. It also covers time saving implementation tips and tricks as well as fallback, polyfills, and graceful degradation approaches.This book draws a path through CSS3; it starts with projects using well supported features across web browsers and then it moves to more sophisticated techniques such as multi polyfill implementation and creating a zooming user interface with SVG and CSS. React to HTML5 form validation, target CSS rules to specific devices, trigger animations and behavior in response to user interaction, gain confidence with helpful tools like SASS, learn how to deal with old browsers and more."Designing Next Generation Web Projects with CSS3" is a helpful collection of techniques and good practices designed to help the implementation of CSS3 properties and features.
Table of Contents (17 chapters)
Designing Next Generation Web Projects with CSS3
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Overall indicator


Some gauges present a color indicator, usually from green to red, associated with the position of the arrow; we can work out a similar result. First of all we need to define two new custom data attributes, one that indicates the percentage at which the indicator switches from green to orange and the other where the percentage switches from orange to red. Here it is:

<div data-gauge data-min="0" data-max="100" data-percent="50" data-orange-from="60" data-red-from="90">
  <div data-arrow></div>
</div>

Then we need to specify a default background color, let's say green, within div[data-gauge]:

background-color: green;

Next, we redefine the background gradient to leave the first 25 percent of the circumference transparent; in this way we can display (and control) the underlying color, so let's rewrite the gauge-background call:

@include gauge-background(11,
  radial-gradient(50% 100%, circle, rgba(255,255,255,0), rgba(255,255,255,0) 25%, rgb(255,255,255...