Experimento 3d fuerza de gravedad asteroides sol y jupiter The Trojan Asteroids The force of gravity can be described with a very simple equation involving only mass and distance. Despite this, the resulting behaviour of gravitating bodies can be extremely complex, even chaotic, when three or more objects are involved. Frameworks, Boilerplates And Tools For Responsive Web Design There have been lots of complaints regarding responsive web designs especially from those web designers who preferred to be really creative and innovative with the website designs that they are used to create and their layouts. In a way, responsive web design has brought web design back to flatness, grids and boxes, but if you think about it well, that’s what web design is about, manipulation of grids and boxes. It’s not like creativity is gone with RWD, it’s still there, but different. Responsive web design and its techniques are in fact the best way to address the reality of the multi-device web, making use of less so that it can deliver more, the ‘more’ being represented by the actual content, the thing that matters. Even if others won’t admit it, responsive web design is taking us to a better web, one where we are realizing what’s important for the user in a contextual environment. This outrage against fresh standards isn’t at all a new thing.
Cross Browser HTML5 Progress Bars In Depth Update (March 9, 2012): I have updated this document to include styling information for Internet Explorer 10. Screenshots of HTML5 progress bars with different styles applied. CSS Sprites: What They Are, Why They're Cool, and How To Use Them This post was originally co-authored in late 2007 by me and Volkan Görgülü, I'm updating it now to improve it a bit and make it more current. You've heard of them, but... Do you really understand them? The name might be a little misleading, because sprites aren't little images like you might be picturing, a sprite is actually one big image. Have you ever seen the CSS technique where the "on" and "off" states of a button are contained within the same image and are activated by shifting the background-position?