Html5 game development animation

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game

animation

HTML5

responsive

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Hi Guys,
I am working on HTML5 Game Development which is Responsive.

There is an instance where I want to do spritesheet animation using background-image but the problem is it gets spoiled onresizing the window since background-image size is in px rather than "%". Kindly let me know if there is any js library or shortcut to do responsive sprite sheet animation.

Thanks,
Haider

What I have tried:

I am using a TweenMax Library for sprite sheet animation