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A Pen By natsumi

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Insecure Resource

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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-.

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About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient. For instance, CoffeeScript can help prevent easy-to-make mistakes and offer a cleaner syntax and Babel can bring ECMAScript 6 features to browsers that only support ECMAScript 5.

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About ES6 Modules

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About External Resources

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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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HTML

            
              <body>
<div>
	<i></i>
	<p><span>昔ながらのmarquee的な吹き出し昔ながらのmarquee的な吹き出し</span></p>
</div>
</body>
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CSS

            
              body {
	background: url(https://source.unsplash.com/random) no-repeat 50% 50% /  cover;
}

div {
	position: relative;
	display: block;
	width: 500px;
	margin: 100px auto;
}

p {
	overflow: hidden;
	padding: 15px 10px 10px 10px;
	color: #333;
	background: rgba(255,255,255,0.6);
	border: 1px solid #369;
	border-bottom: none;
	border-radius: 5px 5px 0 0;
}

i,
i:before,
i:after,
div:before,
div:after {
	content: "";
	position: absolute;
	display: block;
}

div:before {
	left: 0;
	bottom: -6px;
	width: 245px;
	height: 5px;
	border-radius: 0 0 0 5px;
	border-bottom: 1px solid #369;
	border-left: 1px solid #369;
	background: rgba(255,255,255,0.6);
}

div:after {
	right: 0;
	bottom: -6px;
	width: 245px;
	height: 5px;
	border-radius: 0 0 5px 0;
	border-bottom: 1px solid #369;
	border-right: 1px solid #369;
	background: rgba(255,255,255,0.6);
}

i {
	line-height: 0;
	font-size: 0;
	bottom: -5px;
	left: calc(50% - 4px);
	display: block;
	width: 8px;
	height: 5px;
	background: rgba(255,255,255,0.6);
}

i:before {
	top: 5px;
	left: calc(50% - 5px);
	width: 0;
	height: 0;
	border: 5px solid transparent;
	border-top: 6px solid rgba(255,255,255,0.6);
}

i:after {
	top: 2px;
	left: 0;
	width: 7px;
	height: 7px;
	border-right: 1px solid #369;
	border-bottom: 1px solid #369;
	transform: rotate(45deg);
}

p {
	overflow: hidden;
}

span {
	display: block;
	overflow: hidden;
	animation: marquee 10s linear 0s infinite;
}

@keyframes marquee {
	0%{
		transform: translateX(100%);
	}
	100%{
		transform: translateX(-100%);
	}
}
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JS
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999px
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