/* No default padding and margin- all elements will lose their margin*/
*{
	margin: 0px;
	padding: 0px;
	list-style-type: none;
}

/*making all elemetns as block so all browser reads them as block*/
header,nav,article,section,footer,aside{
	display: block;
}

/*Centering website*/
.container{
	width:1000px;
	margin:0px auto;
}
/*Making an emty div*/
.clear{
	clear: both;
}

.logo{
	width:100px; 
	height:50px;
	float: left;
	padding-top: 10px;
}

.top_nav{
	float: left;
	width: 768px;
}

.top_nav ul li{
	float: left;
	padding: 25px 20px;
}

.left_side{
	float: left;
	width: 700px;
}

.left_side article{
	margin-right: 10px;
	padding: 10px;
}

.right_side{
	float: left;
	width: 300px;
}

.right_side div{
	margin: 0px 0px 10px 10px;
	padding: 10px;
}

.page_footer{
	clear: both;
	text-align: center;
}