<div>Hey, focus! You’re supposed to be looking at my corners, not reading my text. The text is just placeholder!</div>
body {
  padding: 1%;
}
/**
 * Beveled corners — with clip-path
 */

div {
	background: #58a;
	clip-path:
	 		polygon(20px 0, calc(100% - 20px) 0, 100% 20px, 100% calc(100% - 20px),
	 		calc(100% - 20px) 100%,
	 		20px 100%, 0 calc(100% - 20px), 0 20px);
	
	padding: 1em 1.2em;
	max-width: 12em;
	color: white;
	font: 150%/1.6 Baskerville, Palatino, serif;
}

External CSS

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External JavaScript

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