body {
	margin:auto;
	padding:0;
	width:90%;
	max-width:800px;
}



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

section#fixed-size-grid-items li {
	list-style-type:none;
	display:inline-block;
}

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

section#stretchable-grid-items aside {
	margin:10%;
	font-size:0.8rem;
	}

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

section#stretchable-grid-items ul {
	margin-left:-10px;
	margin-right:-10px;
	margin-top:1rem;
	margin-bottom:1rem;
	padding-left:0;

}


@media screen and (min-width: 480px) {

	section#stretchable-grid-items li {
		width:50%;
	}
}

@media screen and (max-width:500px) {

	h1 {
		font-size:1.5rem;
	}
}

@media screen and (min-width: 640px) {

	body {
		background-color:#eaf6ff;
	}

	h1 {
		font-size:2.5rem;
	}

	section#stretchable-grid-items li {
		width:25%;
	}
}