a:link {
	font-family: Optima;
	font-weight: bold;
	text-decoration: none;
}
a:visited {
	font-family: Optima;
	font-weight: bold;
	text-decoration: none;
}
a:hover {
	font-family: Optima;
	font-weight: bold;
	color: #0033FF;
	text-decoration: none;
}
a:active {
	font-family: Optima;
	font-weight: bold;
	color: #FF0000;
	text-decoration: none;
}
.style12 {	color: #FFFFFF;
	font-size: 12px;
}
.style15 {	
	color: #000000;
	font-family: Arial;
	font-size: 15px;
	font-style: italic;
}
.style18 {
	font-family: Optima;
	font-size: 18px;
	font-weight: bold;
	color: #0033FF;
}
.style18 {
}
.style20 {color: #FF0000}
.style21 {
	font-family: Optima;
	font-size: 21px;
	font-weight: bold;
	font-style: italic;
	color: #0033FF;
}
.style22 {
	font-family: Optima;
	font-size: 21px;
	font-weight: bold;
	color: #000000
}
.ptable tr td {
	text-align: center;
	border: 2px solid black;
	border-collapse: collapse;
	padding: 15px;
	font-family: Helvetica;
	font-size: 18px;
}
.elements {
	background-color: #E6F9F3;
	font-weight: bold;
}
.center {
	margin-left: auto;
	margin-right: auto;
}

a.periodic:link {
	font-family: Helvetica;
	font-weight: bold;
	text-decoration: none;
}
a.periodic:visited {
	font-family: Helvetica;
	font-weight: bold;
	text-decoration: none;
}
a.periodic:hover {
	font-family: Helvetica;
	font-weight: bold;
	color: #0033FF;
	text-decoration: none;
}
a.periodic:active {
	font-family: Helvetica;
	font-weight: bold;
	color: #FF0000;
	text-decoration: none;
}