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

#fixed-size-grid-items li{
	display: inline-block;
}

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

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

#stretchable-grid-items ul{
	padding: 0;
	margin: 1rem -10px 1rem -10px;

}

#stretchable-grid-items li{
	width: 100%;
	display: inline-block;
}

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


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

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

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


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

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