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HTML

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HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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About the <head>

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Insecure Resource

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CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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Packages

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HTML 

              
                <h1 class='title'>More / less links example</h1>
<p class="text">Cake dessert sweet oat cake marzipan. Pie cupcake marshmallow dragée caramels icing gummi bears lemon drops jelly. Gingerbread topping chupa chups cake cheesecake pudding gummies. Lollipop dessert bear claw. Topping ice cream soufflé lollipop pudding jelly-o. Sweet jelly cotton candy tiramisu cotton candy. Candy jujubes cookie macaroon caramels topping liquorice. Tiramisu cookie cake halvah chocolate bar candy canes lemon drops icing pie. Cake cake marshmallow bear claw gummi bears cupcake. Ice cream lemon drops lemon drops cookie fruitcake chocolate cheesecake lemon drops powder. Tootsie roll gummi bears gummi bears lemon drops gummies sweet roll brownie toffee cake. Lollipop topping ice cream gummies apple pie chupa chups soufflé candy.</p>
<p class="text">Powder lemon drops cake gingerbread marshmallow cake lemon drops. Tootsie roll apple pie sesame snaps toffee. Tootsie roll cheesecake macaroon tootsie roll. Liquorice jelly gummi bears ice cream. Gummi bears tart marshmallow pastry danish biscuit marzipan marshmallow. Dragée pie bonbon croissant lemon drops gummies biscuit chocolate cake muffin. Jelly carrot cake gummies gummi bears biscuit jujubes jelly beans bonbon tiramisu. Cheesecake chocolate bar cookie lemon drops. Cheesecake bear claw macaroon pastry macaroon jelly-o pie. Cheesecake gummi bears gummies. Jelly dessert pudding jelly wafer candy cupcake. Jelly beans sweet roll toffee apple pie candy. Jelly cake gummies cookie pudding topping. Croissant candy canes chocolate chocolate chupa chups croissant cheesecake pie chocolate cake.</p>
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CSS 

              
                .title 
	text-align: center
	color: #C2A878
.text
	padding: 10px
	font-size: 18px
	color: #14281D

.ellipsis
	color: #14281D
.more, .less
	color: #355834
	text-decoration: none
	font-weight: bold
	padding: 0 5px
.fa
	margin: 0 5px
!

JS 

              
                function moreLess(initiallyVisibleCharacters) {
	var visibleCharacters = initiallyVisibleCharacters;
	var paragraph = $(".text")
	

	paragraph.each(function() {
		var text = $(this).text();
		var wholeText = text.slice(0, visibleCharacters) + "<span class='ellipsis'>... </span><a href='#' class='more'>MORE<i class='fa fa-arrow-circle-o-down' aria-hidden='true'></i></a>" + "<span style='display:none'>" + text.slice(visibleCharacters, text.length) + "<a href='#' class='less'> LESS<i class='fa fa-arrow-circle-o-up' aria-hidden='true'></i></a></span>"
		
		if (text.length < visibleCharacters) {
			return
		} else {
			$(this).html(wholeText)
		}
	});
	$(".more").click(function(e) {
		e.preventDefault();
		$(this).hide().prev().hide();
		$(this).next().show();
	});
	$(".less").click(function(e) {
		e.preventDefault();
		$(this).parent().hide().prev().show().prev().show();
	});
};

moreLess(300);
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999px

Console