Strange problem Cant Use H1 H2 etc!

I cant use any of the headings strange first time I've come into this problem any idea's?

  #header-c {
    width:100%;
    padding:0;
    margin-bottom:10px;
	overflow:hidden;
}
#logo-div {
    top:0px;
    width:148px;
    height:121px;
    z-index:1;
    float: left;
	min-height:121px;
	max-height:121px;
}
#header-top {
    top:0px;
	width:850px;
    height:58px;
	z-index:2;
    background-image: url(web/images/nav-top-r.jpg);
    background-repeat: no-repeat;
    background-position: top right;
	float:right;
}
#header-btm {
	top:58px;
	width:830px;
	height:58px;
	z-index:3;
	float:right;
	color: #FFFFFF;
	padding-left:20px;
}
#nav {
	left:0px;
	width:800px;
	height:83px;
	z-index:4;
	background-image: url(web/images/nav-top.jpg);
	background-repeat: repeat-x;
	background-position: bottom;
	min-height: 83px;
	max-height: 83px;
	float: left;
	margin-bottom: 10px;
}
#nav-2 {
	left:0px;
	width:800px;
	height:22px;
	z-index:5;
	background-color: #EBEBEB;
	min-height: 22px;
	max-height: 22px;
	float: left;
	margin-bottom: 10px;
}
#about {
	width:390px;
	height:113px;
	z-index:6;
	background-color: #EBEBEB;
	min-height: 113px;
	max-height: 113px;
	float: left;
	padding-bottom: 10px;
	margin-bottom: 17.5px;
	padding-left:6px;
}
#info {
	width:193px;
	height:276px;
	z-index:7;
	background-color: #FFFFFF;
	min-height: 276px;
	max-height: 276px;
	float: right;
}
#info-2 {
	width:193px;
	height:276px;
	z-index:8;
	background-color: #FFFFFF;
	min-height: 276px;
	max-height: 276px;
	float: right;
	margin-right: 10px;
}
#fourn-info {
	width:390px;
	height:135px;
	z-index:9;
	background-color: #EBEBEB;
	min-height: 135px;
	max-height: 135px;
	float: left;
	padding-left:6px;
}
#cnt-1 {
	width:250px;
	height:250px;
	z-index:10;
	background-color: #EBEBEB;
	min-height: 250px;
	max-height: 250px;
	float: left;
	margin-top: 12px;
}
#cnt-2 {
	width:250px;
	height:250px;
	z-index:11;
	background-color: #EBEBEB;
	min-height: 250px;
	max-height: 250px;
	float: right;
	margin-top: 10px;
}
#cnt-3 {
	width:250px;
	height:250px;
	z-index:12;
	background-color: #EBEBEB;
	min-height: 250px;
	max-height: 250px;
	float: right;
	margin-top: 10px;
	margin-right: 23px;
}
#footer-top {
	left:0px;
	width:100%;
	height:27px;
	z-index:13;
	background-color: #EBEBEB;
	min-height: 27px;
	max-height: 27px;
	float: left;
}
#footer-btm {
	left:0px;
	width:100%;
	height:90px;
	z-index:14;
	background-image: url(web/images/footer-btm.jpg);
	background-color: #82AFC6;
	min-height: 90px;
	max-height: 90px;
	float: left;
	color: #FFFFFF;
	overflow:hidden;
}
.clearer { clear:both; }
body {
	background-color: #FFFFFF;
	background-image: url(web/images/back.jpg);
	background-repeat: repeat-x;
	margin: 0px;
	bottom:0;
}
body,td,th {
	color: #000000;
	font-size: 13px;
	font-family: Tahoma, Arial, Helvetica;
}
#container-2 {
	margin:0 auto;
	width:800px;
}
#fcontainer {
	width:100%;
	margin-top:20px;
}
#ad {
	width:250px;
	height:250px;
	margin:0 auto;
}
h1 {
	font-size: 14px;
	color: #000000;
}
h2 {
	font-size: 14px;
	color: #003B64;
}
h3 {
	font-size: 16px;
	color: #003B64;
}
h4 {
	font-size: 16px;
	color: #000000;
}
h5 {
	font-size: 18px;
	color: #003B64;
}
h6 {
	font-size: 24px;
	color: #003B64;
}
a {
	font-size: 14px;
	color: #006699;
}
a:visited {
	color: #006699;
}
a:hover {
	color: #0099CC;
}
a:active {
	color: #0099CC;
}

Code (markup):

 

What do you mean you can't use them ? use them where and how ?