31 May 2011 by Divya Manian in Articles

HTML5 includes a means to set custom attributes on elements using the data- prefix. Called “data attributes”, they can be scripted to define and store data as well as increase options for attribute selection when styling with CSS.

6 May 2011 by Bruce Lawson in Blog

12 January 2011 by Patrick H. Lauke in Blog

6 January 2011 by Chris Mills in Articles

An introduction to the new object-fit and object-position CSS3 properties from the CSS Image Values and Replaced Content module working draft.

13 July 2010 by Molly E. Holzschlag in Blog

27 April 2010 by Henrik Helmers in Articles

CSS3 shadows and rounded corners are easy to understand at a basic level, but what if you want to start using them in more advanced UI styling, such as textured buttons and semi-transparent glass effects? In this article Opera designer Jan Henrik Helmers hows you how to create these UI features and more, using CSS3 features, and no images whatsoever.

11 February 2010 by Bruce Lawson, Patrick H. Lauke in Articles

This article gives you an introduction to <video> and some of its associated APIs. We look at why native video support in browsers is important, give an overview of the element’s markup, and outline the most important ways in which video can be controlled via JavaScript.

13 January 2010 by Bruce Lawson in Articles

The HTML5 <video> element provides a fantastic way to embed video into web pages without relying on plugins, and it is now supported in Opera, Firefox and Chrome, so things are looking up. One burning question however is “how do we provide alternative content for users that either can’t see, or can’t hear the video?” In this article, Bruce Lawson looks at the issue and suggests a solution.

22 December 2009 by David Storey, Vadim Makeev, Zi Bin Cheah in Articles

Opera 10.50+ comes with support for the CSS3 Backgrounds and Borders specification. Amongst them are border-radius, border-image, multiple backgrounds and box-shadow. Opera 10.60+ updates this support with box-decoration-break and an updated background shorthand. We’ll showcase all these and more through examples and explanations.

17 April 2007 by Håkon Wium Lie in Blog

To really make a splash on the Web, video needs an open solution that can easily be integrated into web pages without the need for proprietary plugins. The HTML5 <video> element and Ogg Theora can provide this, and Opera is proud to announce an experimental build that suppports it. So read this article, and download and play with it today.

8 May 2006 by Håkon Wium Lie in Blog

Opera 9 is built on a new version of Opera’s rendering engine, featuring the some of the latest open Web standards. One of the most interesting new formats is SVG, or Scalable Vector Graphics. In Opera 9, you can not only create animated vector graphics but also let those interact with your Ajax applications. To learn more about the SVG implementation in Opera 9, visit our specification page.