body {
	max-width: 800px;
	width: 90%;
	margin: auto;
}
#fixed-size-grid-items aside{
	font-size: 0.8rem;
	width: 170px;
	margin: 10px;
}
#fixed-size-grid-items li{
	list-style: none;
	display: inline-block;
	margin: 0;
	padding: 0;
}
#fixed-size-grid-items ul{
	padding-left: 0;
}

#stretchable-grid-items li{
	width: 100%;
	list-style: none;
	display: inline-block;
	margin: 0;
	padding: 0;
}
#stretchable-grid-items aside{
	margin:10%;
}
#stretchable-grid-items ul{
	margin: 1rem -10px;
	padding: 0;
} 
@media screen and (max-width: 500px){
	h1{
		font-size: 1.5rem;
	}
}
@media screen and (min-width: 480px) and (max-width: 640px){
	#stretchable-grid-items li{
		width: 50%;
	}
}
@media screen and (min-width: 640px){
	body{
		background-color: #eaf6ff;
	}
	h1 {
		font-size: 2.5rem;
	}
	#stretchable-grid-items li{
		width: 25%;}
}