style.css

body, html {
	padding: 0;
	margin: 0;
}

#inputDate {
	margin: 0vh auto;
	font-size: 4vh;
	display: block;
	height: 8vh;
	text-align: center;
}

#bellGrid {
	position: absolute;
	bottom: 0;
}

.bellWrapper {
	position: relative;
	cursor: pointer;
}

.bellWrapper:hover .hoverbar {
	background-color: rgba(255, 255, 255, 0.0);
}

.bellWrapper:after {
	content: "";
	display: table;
	clear: both;
}

.bellBlock {
	width: 10vw;
	height: 8vh;
	box-sizing: border-box;
	border-bottom: 1px solid #BBB;
	background-color: red;
	float: left;
}

.cover, .hoverbar {
	width: 100%;
	height: 100%;
	background-color: rgba(255, 255, 255, 0.7);
	position: absolute;
}

.hoverbar {
	background-color: rgba(255, 255, 255, 0.3);
}

.rowDate {
	position: absolute;
	line-height: 8vh;
	padding-left: 5px;
	font-family: 'Courier';
	font-size: 1.3vw;
}

.mainRowDate {
	font-size: 1.8vw;
}

.invalidDate {
	width: 100vw;
	text-align: center;
	font-size: 4vh;
	padding: 41vh 0vw;
	background-color: #eee;
	font-family: 'Courier'
}