* {
	font-family: sans-serif;
}
 
header {
	color:white;
	background-color: blue;
 
	text-align: center;
	padding: 1px;
	line-height: 0.5;
}
 
nav {
	color: white;
	background-color: darkblue;
	text-align: center;
	padding: 1px;
	margin: 0px;
}
 
nav li {
	display: inline;
}
 
nav a {
	color: white;
	margin: 16px 18px;
}
 
article {
	max-width: 800px;
	margin: auto;
}
 
aside {
	background-color: lightblue;
	float:right;
	margin: 40px;
	border-style: solid;
	border-width: thin;
}

footer {
	color: white;
	background-color: darkblue;
	text-align: center;
	padding: 1px;
	margin: 0px;
}
 
/* Main page tiles */
section.leftcolumn {
	float: left;
	width: 66%;
}
 
section.rightcolumn {
	float: left;
	width: 33%;
	padding-left: 1%;
}
 
div.card {
	background-color: lightblue;
	padding: 20px;
	margin-top: 20px;
	border-style: solid;
	border-width: thin;
}
 
div.card::after {
  content: "";
  clear: both;
  display: table;
}
 
@media screen and (max-width: 1023px) {
	section.leftcolumn {
		width: 100%;
	}
	section.rightcolumn {
		width: 100%;
		padding-left: 0%;
	}
}