Fix css to allow resize-compatible flexbox format.
Fix css to allow resize-compatible flexbox format.

yeatmanlab/AFQ-Browser,arokem/AFQ-Browser,yeatmanlab/AFQ-Browser,arokem/AFQ-Browser,yeatmanlab/AFQ-viz,richford/AFQ-Browser,yeatmanlab/AFQ-Browser,richford/AFQ-Browser,yeatmanlab/AFQ-viz,richford/AFQ-viz,arokem/AFQ-Browser,richford/AFQ-viz,richford/AFQ-Browser