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

@media (max-width: 800px) {

	body {
	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;
	font-size: 0.8rem;
	padding-left: 0px;
	list-style-type: none;
}

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

#stretchable-grid-items li {
	display: inline-block;
	width: 100%;
	height: 173px;
}

@media (min-width: 480px) {

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

@media (min-width: 640px) {

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

	}
}

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

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