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

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

	html {
		background-color: #eaf6ff;
	}
	
	h1 {
		font-size: 2.5rem;
	}
}


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

	h1 {
		font-size: 1.5rem;
	}
}
	.column {
		display: block;
	}

	.columns {
		font-size: 0.8rem;
		width: 170px;
		vertical-align: top;
		display: inline-block;
		margin: 10px;
	}

	ul {
	padding-left: 0;
	}	

	li {
	display: inline-block;
	list-style-type: none;
	vertical-align: top;
}

aside {
	width: 170px; 
	font-size: 0.8rem;
	margin: 10px;
}

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


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

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

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


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

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