CSS has offered a slew of latest options reminiscent of CSS Gradients, Shadows, Border Radius, and Animation that may all be accomplished purely with CSS. There also are a number of options that experience but to be applied due tolack of browser toughen for CSS variables and CSS calc() purposes. But when you’ll’t truly look ahead to the longer term, let’s take a look at Myth.

Myth, in contrast to different pre-processors that invent its personal syntax, makes use of the similar syntax as the usual spec. You’ll use variables, perform mathematical or color operations, and write new CSS homes in its reputable shape. Its objective is to permit builders to put in writing natural CSS, whilst additionally be capable to make the most of future-standard syntax, presently.

Getting Began

To get began, we wish to set up Fable binary so to collect it to the present CSS typical. There isn’t GUI software like Codekit or Koala that helps Fable on the time of writing, so that is the one solution to collect Fable into browser-compliant CSS layout.

In Terminal, kind the next command:

npm set up -g fable

You’ll then use this command beneath, for example, to collect supply.css into output.css.

fable supply.css output.css

Or, kind this to watch the supply.css and collect it to output.css for each trade.

fable --watch supply.css output.css

Fable does now not introduce a brand new extension. It really works with .css as proven above.

Writing CSS with Fable

Fable additionally does now not introduce proprietary purposes and regulations like the opposite CSS Pre-processors, so that you will have to be capable to get used to Fable nearly instantly. It’s like simple CSS.

Variables

Let’s get started with Variables. In CSS, a variable is asserted, like so:

:root {
	var-length: 10px;
	var-color: #000;
}
.elegance {
	background-color: var(shade);
	width: var(size);
}

Fable compiles this code into browser-compliant layout:

.elegance {
	background-color: #000;
	width: 20px;
}

You’ll discuss with our earlier article about Using CSS Variables for extra main points.

Math Operations

As discussed, we will additionally carry out mathematical operations with the brand new CSS3 calc() serve as. Now we have additionally coated this serve as in our earlier article: Using CSS3 Calc Function.

Let’s prolong our first instance with it:

:root {
	var-length: 10px;
	var-color: #000;
}
.elegance {
	background-color: var(shade);
	width: calc(var(size) / 2);
}

Fable compiles the above codes into:

.elegance {
	background-color: #000;
	width: 10px;
}

Colour Changes

Fable additionally helps some shade operations or changes like in LESS or Sass. A brand new typical serve as for it’s proposed to be incorporated in CSS spec named shade() — together with a suite of color-adjusting purposes reminiscent of tint(), colour(), and mix() simply to call a couple of.

Under is one instance: we build up the background shade’s lightness by means of 80% and reduce the border shade by means of 50%.

:root {
	var-length: 20px;
	var-black: #000;
	var-white: #fff;
}
.elegance {
	background-color: shade(var(black) lightness(+ 80%));
	border: var(border-width) forged shade(var(white) lightness(- 50%));
	width: calc(var(size) / 2);
}

That code will produce:

.elegance {
	background-color: rgb(204, 204, 204);
	border: 2px forged rgb(128, 128, 128);
	width: 10px;
}

Autoprefixer

Fable may even robotically upload dealer prefix to CSS homes. We will merely write, for example, CSS Field Shadow, this manner:

.elegance {
	box-shadow: 2px 1px 0px var(black);	
}

The output is:

.elegance {
	-webkit-box-shadow: 2px 1px 0px #000;
	box-shadow: 2px 1px 0px #000;
}

Ultimate Idea

I really like the speculation of Fable. With it, we will write natural CSS of the longer term as of late with out being worried about browser toughen. And because it makes use of the usual syntax, later when all browsers have applied it (as the usual), we received’t wish to rewrite the entire code. I feel I’m going to begin the use of it in each considered one of my destiny tasks. What about you? Will you undertake the similar?

The put up Writing CSS with Myth For Web Designers gave the impression first on Hongkiat.

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