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

aside{
	display: inline-block;
	font-size:0.8rem;
}

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

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

#stretchable-grid-itmes ul{
	margin-left:-10px;
	margin-right:-10px;
	margin-top:1rem;
	margin-bottom:1rem;
}
#stretchable-grid-itmes li{
	margin:0px;
	display:inline-block;
}

li{
	list-style:none;
	display: inline-block;
}

ul{
	padding-left:0;
}

@media screen and (min-width:640px){
	body{
		background-color:#eaf6ff;
	}
	h1{
		font-size:2.5rem;
	}
	#stretchable-grid-items li{
		width:25%;
	}
}

@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 (max-width:480px){
	#stretchable-grid-items li{
		width:100%;
	}
}