Untitled

############ HTML

<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<link rel="stylesheet" href="css/style.css">
	<link rel="icon" href="img/icon.png">
	<title>huy</title>
</head>
<body>
	<div id="page-wrapper">
		<div id="header" class="block"></div>
		<div id="sidebar" class="block"></div>
		<div id="content" class="block"></div>
		<div id="footer" class="block"></div>
	</div>
</body>
</html>

############ CSS

html {
	margin: 0 0 0 0;
}

body {
	margin: 0 0 0 0;
	background-image: url(../img/bg.jpg);
	background-size: 100%;
}

.block {
	background-color: #0a0a0a;
	opacity: 0.7;
	box-shadow: 0px 0px 5px 5px #1f1f1f;
	margin: 10px 10px 10px 10px;
	vertical-align: top;
}


#page-wrapper {
	width: 100%;
	height: 100vh;
}

#header {
	width: 800px;
	height: 100px;
	display: inline-block;
}

#sidebar {
	width: 250px;
	height: 300px;
	display: inline-block;
}

#content {
	width: 800px;
	min-height: 600px;
	/*display: inline-block;*/
}

#footer {
	width: 800px;
	height: 70px;
	/*display: inline-block;*/
}