.side-shadow {
	box-shadow: 7px 0 10px -5px rgba(0, 0, 0, 0.3),	-7px 0 10px -5px rgba(0, 0, 0, 0.3);
}
main {
	flex: 1 0 auto;
}
footer {
	flex-shrink: 0;
}
footer a{
	color:#fff;
	text-decoration: none;
}
footer a:hover{
	text-decoration: underline;
}
footer ul{
	text-decoration: underline;
}