Mobile Homepage Intro Animation Tweak

[kvngco]

@mileeco another we should look at

I think what Michelle said about removing logo makes sense if we're keeping the one in the grid there. Some thoughts:

• have http://ysdn2016.com/shapes/ the block instead without logo
• grid should align to edges of body margins
• fill white gaps flanking logo with dots

[mileeco]

This is for @iamnbutler

[iamnbutler]

The solution for this will depend on #99.