CSS equally spacing objects

The best way to space out divs evenly! https://css-tricks.com/equidistant-objects-with-css/

CSS3 Grid Layout

W3.org reference

CSS3 Progress bars

CCS Tricks article demo of nice looking progress bars.

CSS3 Progress Bars

Flexbox explained

Article explaining CSS layout helper flexbox.

http://learnlayout.com/flexbox.html

Quick guide to Flexbox

CSS-tricks.com Guide to Flexbox