td,th {
	border:1px solid black;
	padding:1em;
}
th {
	background:lightgrey;
}
tbody tr:nth-child(even) td{
	background:#eeeeee;
}
main {
	height:100vh;
	display:grid;
	grid-template-columns: repeat(3, minmax(10px, 1fr));
	grid-template-rows: repeat(2, minmax(10px, 1fr));
}
section {
	overflow:scroll;
}

#timer { grid-area: 1 / 1 / 3 / 2; }
#summary { grid-area: 1 / 2 / 3 / 3; }
#category { grid-area: 1 / 3 / 2 / 4; }
#songs { grid-area: 2 / 3 / 3 / 4; }