Fibonacci is a handsome flexbox tool to help non web developers and designers to create web pages layout in seconds.
you can split boxes in vertical, horizontal, expand them, shrink, adjust align, justification, delete or add a box sibling directly. Beside that you still can enter your own width and height for boxes or their parent.
When finish playing with the layout boxes, click export HTML and export CSS buttons to get the codes for your new born layout, handy layout tool really.
fibonacci.js is only 14KB but it still work with jQuery and autoprefixer.js (869KB). Heavy?! Hey we don’t care about the size, it just for internal use only not for online.
Thanks Max Steenbergen who created this cute and creative layout tool for free and open source.
Fibonacci is released under MIT license.
Source: Read more about Fibonacci