*{margin: 0; padding: 0;}
body{background: white;}
header{text-align: center; font-family: calibri; padding: 1rem; font-size: 0.9rem; display: block; background: green; color: white;}

main{
    border: 0.2rem solid red;
    text-align: center;
}
div {
	display: flex;
	height: 50rem;	
}

section{padding: 1rem 1rem 1rem 1rem; background-color: blue; width: 70%; color: white; text-align: center;}
article{
	background-color: orange;
	color: white;
	text-align: center;
	height: 14rem;
	margin: 1rem;
}
aside{
	background-color: grey;
	color: white;
	text-align: center;
	width: 30%;

}
footer{text-align: center; font-family: calibri; font-size: 0.8rem; padding: 1rem; background: green; color: white;}