use variables file in all scss files code example

Example 1: sass variables across files

// assets/_master.scss 
$accent: #6D87A7;           
$error: #811702;

Example 2: sass variables across files

// When importing the master, you leave out the underscore, and it
// will look for a file with the underscore. This prevents the SCSS
// compiler from generating a CSS file from it.
@import "assets/master";

// Then do the rest of my CSS afterwards:
.text { color: $accent; }