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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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Adding Classes

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html> tag. If you want to add classes there that can affect the whole document, this is the place to do it.

About the <head>

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. If you need things in the <head> of the document, put that code here.

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Insecure Resource

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CSS

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CSS Base

About CSS Base

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JavaScript

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

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Babel includes JSX processing.

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HTML 

              
                <header>
  <h1 class="logo">Landing Page</h1>
</header>
    
<div class="container">
  <h2 class="heading">What does this all mean?</h2>
    <p>Nescius magna excepteur appellat, malis cernantur efflorescere nam nam dolor si duis, ullamco elit nulla eu ipsum, te minim noster qui cupidatat eu de ab nulla aliqua eram ad esse mandaremus in incididunt, nulla doctrina mentitum. Qui de ipsum anim noster o ea amet incididunt. Ad aut magna iudicem e magna an a fore fabulas o an iudicem quo quibusdam iis aliquip nisi hic arbitror graviterque, ex qui magna ipsum elit ne ex noster consectetur, sunt appellat eiusmod, magna arbitror do relinqueret. Legam iis senserit.Sed consequat e incurreret, sed duis expetendis comprehenderit se nostrud. Esse pariatur probant e quorum mandaremus litteris, ab ipsum cohaerescant e tamen de ingeniis eu anim si de summis litteris possumus quo ex malis cohaerescant ne quorum ita occaecat non esse in lorem de arbitror a duis. Varias ex ne quid singulis, sint admodum excepteur. In a nisi senserit ut deserunt quis te expetendis coniunctione, aute ingeniis relinqueret id ab quid iudicem. Summis mandaremus ab labore aute. A legam nescius distinguantur, incididunt multos proident, aut te veniam esse sint, eram singulis ex varias amet si eu officia id laborum, irure admodum singulis, ab anim illum et singulis sed velit hic singulis. Eu sint amet malis possumus, irure ne doctrina.</p>
    <p>Consequat a lorem, dolor et doctrina. Ab probant te quibusdam si officia eram mentitum, magna incididunt vidisse ea est malis arbitrantur quo commodo tamen incididunt nescius, sed esse hic sunt, nulla senserit arbitrantur do ex est tamen consequat. Esse fidelissimae incididunt quae tempor ex in anim offendit officia e possumus anim deserunt proident, lorem et ubi sint vidisse. Est nisi pariatur consectetur, ne nulla ea duis. Aut lorem familiaritatem o labore commodo vidisse ex malis philosophari doctrina nulla laborum, ita labore eiusmod philosophari sed offendit fugiat laborum eu eu possumus et proident, si quorum minim an quibusdam te se veniam ut illum.</p>
</div>
    
<div class="banner">
  <div class="banner-container">
    <h2>Quem iudicem pariatur, quibusdam sunt expetendis deserunt</h2>
      <p> in id aliqua duis tamen proident id ea sed tamen culpa sint. Veniam quo doctrina. Fugiat distinguantur incididunt esse ullamco  Aut lorem familiaritatem o labore commodo vidisse ex malis philosophari doctrina nulla laborum, ita labore eiusmod philosophari sed offendit.</p>
  </div>
</div>
    
<div class="container">
  <h2 class="heading">Really Interesting Heading</h2>
    <p>Nescius magna excepteur appellat, malis cernantur efflorescere nam nam dolor si 
    duis, ullamco elit nulla eu ipsum, te minim noster qui cupidatat eu de ab nulla 
    aliqua eram ad esse mandaremus in incididunt, nulla doctrina mentitum. Qui de ipsum anim noster o ea amet incididunt. Ad aut magna iudicem e magna an a fore fabulas o an iudicem quo quibusdam iis aliquip nisi hic arbitror graviterque, ex qui magna ipsum elit ne ex noster consectetur, sunt appellat eiusmod, magna arbitror do relinqueret. Legam iis senserit.Sed consequat e incurreret, sed duis expetendis comprehenderit se nostrud. Esse pariatur probant e quorum mandaremus litteris, ab ipsum cohaerescant e tamen de ingeniis eu anim si de summis 
    litteris possumus quo ex malis cohaerescant ne quorum ita occaecat non esse in lorem de arbitror a duis. Varias ex ne quid singulis, sint admodum excepteur. In a nisi senserit ut deserunt quis te expetendis coniunctione, aute ingeniis relinqueret id ab quid iudicem. Summis mandaremus ab labore aute. Magna quo iis varias incurreret, dolor et possumus a ne dolor senserit offendit quo quis possumus illustriora. Expetendis duis vidisse singulis iis quorum aliquip ubi coniunctione, quae se laborum, an ullamco se officia. Iis summis multos quid appellat an e non consectetur, varias ex aliquip non quae, nulla eu ingeniis et noster sed velit ab aut quae voluptate.</p>
        
  <h2 class="heading">Not So Interesting Heading</h2>
    <p>Lorem doctrina o veniam velit, qui fore et irure hic illum offendit voluptatibus qui litteris id tamen incurreret aut e de noster nisi enim a quibusdam et tamen cernantur o in litteris ita aliquip aut aliqua cernantur a proident. Nostrud lorem summis tempor enim, si iudicem distinguantur ubi de lorem offendit concursionibus, ut quae doctrina. Nostrud si nescius. Incurreret ipsum se mandaremus exercitation. Singulis ab anim laborum. Fugiat singulis aut dolore veniam, voluptate malis est doctrina voluptatibus ex se dolor sint e senserit, malis pariatur laboris. Enim domesticarum iudicem summis consequat.Non expetendis e voluptate ea magna ne e fore ingeniis, dolor expetendis doctrina e est mentitum sed mandaremus do dolore adipisicing quamquam dolor iudicem, ea commodo non expetendis, ingeniis ita lorem cernantur ex et enim senserit singulis. Fore quamquam efflorescere, lorem proident e instituendarum, deserunt minim malis tempor lorem do hic quid ea enim. Velit si deserunt sed expetendis aliqua  officia admodum. Pariatur do ullamco, nescius do magna. Fore eu id multos probant, si quo noster incididunt, summis te voluptate quo cillum se appellat de laboris, tamen ubi in quem probant si o se despicationes, tamen voluptate probant, magna comprehenderit officia legam deserunt.</p>  
</div>
    
<a href="#" class="top">&#9650;</a>
!

CSS 

              
                /* Base Styles */

body{
    margin: 0;
    padding: 0;
    color: #222;
    font-size: 16px;
    line-height: 1.4em;
    font-family: 'Raleway', sans-serif;
}

/* Header */

header{
    width: 100%;
    height: 40em;/*FallBack*/
    height: 100vh;
    margin: 0;
    overflow: hidden;
    background: url(https://farm4.staticflickr.com/3201/2746960560_8711acfc60_o.jpg) no-repeat;
    background-size: cover;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.logo{
    font-size: 4.2em;
    font-weight: 300;
    color: #fff;
    font-family: 'Poiret One', cursive;
}

/* Page Content */

.container{
    margin: 0 auto;
    padding: 20px 15px;
    max-width: 60%;
}

.heading{
    font-size: 1.75em;
    margin-bottom: .9em;
    line-height: 1em;
}

.banner{
    width: 100%;
    background: #ED6C4D;
    text-align: center;
    color: #fff;
}

.banner-container{
    margin: 0 auto;
    padding: 10px 15px;
    max-width: 85%;
}

/* Back To Top Button */

.top{
    display: none;
    background: #222;
    position: fixed;
    padding: .6em;
    color: #fff;
    bottom: 5%;
    right: 3%;
    text-decoration: none;
    border-radius: 3px;
    opacity: .65;
    font-size: 1.8em;
}

.top:hover{
    opacity: 1;
    transition: all 1s;
}

/* Media Queries */

@media only screen and (max-width: 600px) {
   .logo { font-size: 3em; }
}

@media only screen and (max-width: 320px) {
   .logo { font-size: 2.5em; }
   .top { padding: .5em; }
}
!

JS 

              
                $(window).on("scroll", function() {
	if ($(this).scrollTop() > 300) {
		$('.top').fadeIn(400);
	} else {
		$('.top').fadeOut(400);
	}
});
    
$('.top').on("click", function(e) {
	e.preventDefault();
	$('html, body').animate({scrollTop: 0}, 300);
});
!
999px

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