Triangle Background css 01

<!DOCTYPE html>
<html>
<head>
	<title>TRIANGLE BACKGROUND CSS 01 | par NGLESSON</title>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<meta name="keyword" content="TRIANGLE BACKGROUND CSS 01">
	<meta name="author" content="Mezgani said">
	<meta name="copyright" content="NGLESSON">
	<link href="style.css" rel="stylesheet">
</head>
<body>
    <div class="container">
    </div>                    
</body>
</html>
.container{
	position: relative;
	width: 100%;
	min-height: 100vh;
	margin: 0 auto;
	overflow: hidden; 
}
.container::after{
    content: '';
    position: absolute;
    background-color: blue;
    padding-bottom: 141.42136%;
    width: 100%;
    bottom: 0;
    left: 0;
    transform: rotate(65.5deg);
    transform-origin: left bottom;
}

                                    
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