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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>

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

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

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

We offer two popular choices: Autoprefixer (which processes your CSS server-side) and -prefix-free (which applies prefixes via a script, client-side).

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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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If the script you link to has the file extension of a preprocessor, we'll attempt to process it before applying.

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Packages

Add Packages

Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.

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Using packages here is powered by esm.sh, which makes packages from npm not only available on a CDN, but prepares them for native JavaScript ESM usage.

All packages are different, so refer to their docs for how they work.

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HTML 

              
                  <section class="intro">
        <div class="video-container">
            <video src="https://cdn.videvo.net/videvo_files/video/free/2014-07/large_watermarked/Run_5_wo_metadata_h264420_720p_UHQ_preview.mp4" autoplay muted loop></video>
        </div>
        <div class="content">
            <h1>Tam Ekran Video</h1>
            <h4>Arka Plan için Tam Ekran Video Örneği</h4>
            <a href="#page" class="read-more">Devamını Oku</a>
        </div>
    </section>

    <section id="page">
        <h1>Lorem Ipsum</h1>
        <p>
            Lorem ipsum dolor sit, amet consectetur adipisicing elit. Vero iure obcaecati enim velit explicabo sint hic aut cumque nam quod quo ipsum, fuga minima dolore quos eum quae ab dignissimos?

        </p>

    </section>
!

CSS 

              
                @import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@300;400&display=swap');

* {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

body {
	font-family: 'Open Sans', sans-serif;
	line-height: 1.5;
}

h1 {
	font-weight: 300;
	font-size: 50px;
	line-height: 1.2;
	margin-bottom: 15px;
}

/* Giriş Bölümü */
.intro {
	height: 100vh;
	display: flex;
	align-items: center;
	justify-content: center;
	text-align: center;
	color: #fff;
	padding: 0 20px;
}
/* Giriş Bölümü Bitiş */

/* Video Konumlandırma */
.video-container {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	overflow: hidden;
	background: #333;
}
.video-container video {
    min-width: 100%;
	min-height: 100%;
    position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	object-fit: cover;
}
/* Video Konumlandırma Bitiş */

/* Karartma Efekti */
.video-container:after {
	content: '';
	z-index: 1;
	height: 100%;
	width: 100%;
	top: 0;
	left: 0;
	background: rgba(0, 0, 0, 0.5);
	position: absolute;
}
/* Karartma Efekti Bitiş */

.content {
	z-index: 2;
}

.read-more {
	display: inline-block;
	padding: 10px 30px;
	background: #333;
	color: #fff;
	border-radius: 5px;
	border: solid #fff 1px;
	margin-top: 25px;
	opacity: 0.8;
    transition: .2s all;
    text-decoration: none;
}

.read-more:hover {
	transform: scale(.9);
}

/* İçerik (Opsiyonel) */
#page {
	padding: 40px;
	text-align: center;
}

#page p {
	font-size: 1.2rem;
	max-width: 600px;
	margin: auto;
}

#page h2 {
	margin: 30px 0;
	color: #333;
}

.social a {
	margin: 0 5px;
}
/* İçerik Bitiş */
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JS
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