#signature{
	height: 100%;
	width: 100%;
	z-index: 99999;
	position: absolute;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
	margin: auto;
	background: #fff;
	display: none;
}

#operation {
	height: 100%;
	display: flex;
	flex-flow: column;
	position: absolute;
	right: 1.5rem;
}
#save{
	flex: 1;
	text-align: center;
	display:table;
}
#clear{
	flex: 1;
	text-align: center;
	display:table;
}
#temp{
	flex: 1;
	opacity: 0%;
}
#backspace{
	right: 1.5rem;
}
#operation span{
	display:table-cell;
	vertical-align:middle;
}