body {
	width:800px;
	margin:auto;
	max-width:90%;
}

@media (min-width: 640px) {
	
	body {
		background-color:#eaf6ff;
	}
} 

@media (max-width:500px) {
	h1 {
		font-size:1.5rem;
	}
}

@media (min-width: 640px) {
	h1 {
		font-size: 2.5rem;
	}
}



#fixed-size-grid-items li {
	display:inline-block;
	list-style-type: none;
	vertical-align: text-top;

}

#fixed-size-grid-items ul {
	padding-left: 0;
}

#fixed-size-grid-items aside {
	display: inline-block;
	width: 170px;
	margin:10px;
	font-size:0.8rem;
}

#stretchable-grid-items aside {
	margin: 10%;
}


#stretchable-grid-items li {
	list-style-type: none;
	display: inline-block;
	vertical-align: top;
	width:100%;
}


#stretchable-grid-items ul {
	margin-top: 1rem;
	margin-bottom:1rem;
	margin-left: -10px;
	margin-right:-10px;
	
}


@media (min-width: 480px) {
	#stretchable-grid-items li {
		width: 50%;

	}
}



@media (min-width: 640px) {
	#stretchable-grid-items li {
		width: 25%;
	}
}