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!
Insecure Resource

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CSS

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JavaScript

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HTML 

              
                <html>
 	<body>
		<h1>PDF Print Download</h1>
 		<p>Test to check functionality of using '@media print' and  '@page'<br>media queries to download a selected dom node</p>
 		<h2>Download items below in 1 pdf &darr;</h2>
		
		<div class="print">
			<div class="container front">
				<p>paystack</p>
			</div>
			<div class="container back">
				<div class="left">
					<h3>Demilade Olaleye</h3>
					<h4>Web Exp. Engineer</h4>
					<p>3A, Ladoke Akintola,<br>Ikeja GRA, Ikeja,<br>Lagos, Nigeria.</p>
				</div>
				<div class="right" style="margin-left:5%">
					<p>201 Spear Street, Suite 1100,<br>PMB 3228, San Francisco,<br>California, United States.</p>
				</div>
			</div>
		</div>
		<a href="#!" class="button">
			Download
		</a>
    
	</body>
</html>
!

CSS 

              
                :root {
/* 	Responsive Sizing */
	--size: 25vmin;
}
/* General Layout */
body {
	font-family: sans-serif;
   display: flex;
   flex-direction: column;
   justify-content: center;
   align-items: center;
   background-color: #efe;
}
.container {
	margin-bottom: 5%;
	background-color: #fff;
/* 	For card dimensions of 85.5 x 55, ratio =  1.556 x 1  */
	width: calc(1.565 * var(--size));
	min-width: 300px;
	height: calc(1 * var(--size));
	min-height: 200px;
	display: flex;
	box-sizing: border-box;
	border: 1px solid grey;
}
.front {
	flex-direction: column;
	justify-content: center;
	align-items: center;
	background-color: #071c33;
	background-image: url('https://nigerialogos.com/logos/paystack/paystack.svg');
	background-size: 10%;
	background-position: 49% 30%;
	background-repeat: no-repeat;
	color: #fff;
	font-weight: bolder;
	font-size: 200%;
}
.front p {
	margin-top: 65px;
}
.back {
	align-items: flex-end;
	font-size: 70%;
	padding: 10%;
}
.button {
	text-transform: uppercase;
	text-decoration: none;
	color: #fff;
	background-color: rgb(50,150,100);
	padding: 1rem 2rem;
	border-radius: 5px;
	margin-top: 2%;
}

/* Print Styles */
@media print {
/* 	Hide everything that doesn't have the '.print' class */
	body > *:not(.print){
		display: none;
	}
	.front {
/* 		Force the browser to print with the given colors instead of overwriting to black&white */
		color-adjust: exact;
		-webkit-print-color-adjust: exact;
		background-color: #071c33;
		color: #fff;
	}
	
/* 	Give the cards fixed dimensions  */
	.container {
		width: 85.5mm;
		height: 55mm;
	}
	
/* 	Remove the header and footer text and urls the browser places  */
	@page {
		margin: 0;
	}
	
}
!

JS 

              
                const button = document.querySelector('a');
button.addEventListener('click', () => {window.print()});
!
999px

Console