html, body, div, 
h1, h2, h3, h4, h5, h6, 
p, blockquote, 
a, span, img, strong, 
dl, dt, dd, ol, ul, li,
fieldset, form, label, input, textarea
{
     border-style: none;
	border-color: inherit;
	border-width: medium;
	margin: 0px;
	padding: 0px;
	outline: 0px;
}
ul, ol, li{list-style-type: none; }
table {border-collapse: collapse; border-spacing: 0}

/*------------------------- constant style -----------------------------*/
.left{float:left;}
.right{float:right;}
.clear{clear:both;}
.ct{margin:0 auto;}
.ac {text-align:center;}
.al{text-align:left;}
.ar{text-align:right;}
.r{margin:0px; padding:0px; border:none; list-style: none;}
.none{text-indent:-9999px; font-size:1%; overflow:hidden;}
.n{display:none;}
.block{display:block;}

/* constant typography */
.b{font-weight:bold;}