KNACSS/less/_00-config.less

// Config file : variables, mixins, ...

// font sizes
@base-font-size	: 14px; // if "14px" then 1em = 14px
@line-height	: 1.5; // equiv line-height 1.5
@h1-size		: 3.2rem; // equiv "32px"
@h2-size		: 2.8rem; // equiv "28px"
@h3-size		: 2.4rem; // equiv "24px"
@h4-size		: 2.0rem; // equiv "20px"
@h5-size		: 1.8rem; // equiv "18px"
@h6-size		: 1.6rem; // equiv "16px"

// font stacks
@font-stack-common		: Helvetica, Arial, sans-serif; // common font
@font-stack-headings	: Helvetica, Arial, sans-serif; // headings font
@font-stack-monospace	: Consolas, 'DejaVu Sans Mono', Courier, monospace; // monospace font
@font-stack-universal	: FreeSans, Arimo, "Droid Sans", Helvetica, Arial, sans-serif; // universal stack

// font colors
@base-color					: #000; // text color on body and content
@primary-color				: #000; // text color on primary elements
@secondary-color			: #000; // text color on secondary elements
@headings-color				: #000; // text color on headings
@base-color-link			: #333; // base links color
@base-color-link-hover		: #000; // base hovered/focused links color

// backgrounds
@base-background		: #fff; // body background color
@primary-background		: #fff; // primary elements background color
@secondary-background	: #fff; // secondary elements background color

// spacings (choose unit you prefer)
@tiny-value				: 5px; // tiny value for margins / paddings
@small-value			: 10px; // small value for margins / paddings
@medium-value			: 20px; // medium value for margins / paddings
@large-value			: 40px; // large value for margins / paddings
@extra-large-value		: 80px; // extra large value for margins / paddings
@ultra-large-value		: 160px; // ultra large value for margins / paddings

// breakpoints (choose unit you prefer)
@tiny-screen			: 480px; // tiny screens media query (less than 480px)
@small-screen			: 768px; // screens between 481px and 768px
@medium-screen			: 1024px; // screens between 769px and 1024px
@large-screen			: 1280px; // screens between 1025px and 1280px
@extra-large-screen		: 1600px; // screens between 1281px and 1600px
@ultra-large-screen		: 1920px; // ultra large screens

// misc (choose unit you prefer)
@gutter		: 20px; // gutter value for grid layouts. Unit can be: %, px, em, rem

// LESS mixins : don't touch or you'll be banned ;)
// px to em/rem 
.rem(@size, @bf: @base-font-size){
	@rem: @size / 10;
	font-size: unit(round(@base-font-size * @size /10), px);
	font-size: unit(@rem, rem);
}
.em(@size, @bf: @base-font-size){
	@em: @size / @bf;
	font-size: unit(round(@em,2), em);
}
.px(@size, @bf: @base-font-size){
	@px: @size * @bf;
	font-size: unit(round(@px,2), px);
}