no no io lo vedo sia con firefox chrome e ie nello stesso modo e loro anche solo con la sfasatura. ecco tutto il codice

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">

<html lang="it">
<head>
<link rel="stylesheet" href="css/style.css" type="text/css" media="screen" title="no title" charset="utf-8">
<link href='http://fonts.googleapis.com/css?family=Quicksand:300,400,700' rel='stylesheet' type='text/css'>
</head>
<body>
<div class="corpohome">
<div class="corposito">

<div class="header">

<div class="menulin">
<a href="home.html"><div class="logo">
</div></a>
<div class="menu">
<div class="sep"></div>
<ul id="nav">[*]Home
<li class="trat">[*]Chi siamo
<li class="trat">[*]Servizi
<li class="trat">[*]Blog
<li class="trat">[*]Contatti[/list]
<div class="sep meno"></div>
</div>
<div class="social">
<div class="icon fac"></div>
<div class="icon twi"></div>
<div class="icon pin"></div>
<div class="icon lin"></div>
</div>
<div class="canc"></div>
</div>

[img]images/servizi.png[/img]
<map id="_mappa" name="mappa">
...
</map>
[img]images/sfumatura-bianca.png[/img]

<div class="separatore"></div>
<div class="canc"></div>
</div>
<div class="canc"></div>
<div class="sidebar">

...
</div>

<div class="blog">
...
</div>

<div class="canc"></div>

</div>
<div class="footer">
<div class="separatore"></div>


...</p>
</div>
</div>
</body>
</html>

body {font-family: 'quicksand', Times, serif;background:#ffffff;}
.corpohome{width:100%;height:100%;background:url(i mg/slice.jpg) repeat-x;}
h1 {font-size:18px;}
h2{font-size:17px;}
h3{font-size:14px;}
h4{font-size:13px;}
p{font-size:14px;}
a {color:#2b2b2b;}
a{text-decoration:none;}
a:hover {text-decoration:none;}
.corposito{width:950px;margin-left:auto;margin-right:auto;background:#ffffff;color:#3f3f3f;font-weight:550;}
.header{width:100%;height:546px;background:#d3d4d6 ;}
.menuround{margin-top:100px;width:950px;height:546px;}
.men{margin-top:66px;width:950px;height:474px;position:absolut e;z-index:0;}
#mappa{border:solid 1px;}
.trasp{margin-left:74px;width:802px;height:546px;z-index:1;margin-top:-13px;}
.separatore{width:887px;height:12px;background:url (img/righe-sotto-pallone.png) no-repeat;margin-left:auto;margin-right:auto;}
.blog{width:550px;float:left;padding:20px;margin-top:110px;margin-left:10px;}
.blog h2{font-weight:550;margin-top:10px;}
.box{margin-bottom:20px;}
.anteprima {width:90px;height:119px;border:solid 1px #dfdfdf;padding:3px;float:left;}
.textpart{width:402px;margin-left:20px;float:left;padding-top:3px;}
.textpart h2, .textpart a{color:#f54245;text-align:left;font-weight:400;}
.textpart p{text-align:justify;font-weight:400;}
.division{width:410px;}
.line{width:335px;height:3px;background:url(img/riga-blog.png) no-repeat;float:left;}
.leggi{width:58px;height:24px;background:url(img/leggi.png) no-repeat;float:left;margin-left:10px;margin-top:-10px;}
.footer{width:100%;padding-bottom:0px;margin-bottom:0px;background:#ffffff;border:solid 1px;}
.footer p{text-align:center;font:12px;margin-top:5px;color:#2d2d2d;border:solid 1px;}
.canc{clear:both;}
/*CSS MENU______________________________________________ ______________________________________*/
.menulin{background:#d3d4d6;padding-bottom:27px;padding-top:10px;width:100%;}
.logo{float:left;width:121px;height:60px;backgroun d:url(img/logo.png) no-repeat;margin-left:35px;}
.menu{float:left;margin-top:18px;height:47px;margin-left:25px;margin-right:25px;}
.sep{width:570px;height:8px;background:url(img/righe-menu.png) no-repeat;}
.meno{margin-top:-13px;}
ul#nav{height:30px;padding-left:70px;}
ul#nav li{float:left;padding:0px;font-size:15px;margin-right:10px;text-align:left;font-weight:700;height:27px;padding-top:1px;display:block;}
ul#nav li a{text-align:left;font-weight:700;display:block;padding-top:1px;}
ul#nav li a:link{float:left;padding:0px;font-size:15px;margin-right:10px;text-align:left;font-weight:700;display:block;height:27px;padding-top:1px;}
ul#nav li a:visited{float:left;padding:0px;font-size:15px;margin-right:10px;text-align:left;font-weight:700;display:block;height:27px;padding-top:1px;}
ul#nav li a:hover{float:left;font-size:15px;margin-right:10px;text-align:left;font-weight:700;border-bottom:solid 3px #c13735;display:block;height:27px;padding-top:1px;}
ul#nav li a:active{float:left;padding-top:1px;font-size:15px;margin-right:10px;text-align:left;border-bottom:solid 3px #c13735;height:27px;color:#c13735;}
.active{border-bottom:none !important;color:#c13735;}
.active:hover{}
.trat{width:9px;height:5px;background:url(img/trattino-menu.png) no-repeat;margin-top:12px;}
.social{float:left;height:40px;margin-top:23px;}
.icon{width:35px;height:35px;float:left;}
.icon:hover{margin-top:-5px;}
.fac{background:url(img/facebook.png) no-repeat;}
.twi{background:url(img/twitter.png) no-repeat;}
.pin{background:url(img/linkedin.png) no-repeat;}
.lin{background:url(img/pinterest.png) no-repeat;}
/*CSS SIDEBAR___________________________________________ ______________________________________*/
.sidebar{width:260px;float:left;padding:20px 20px 20px 40px;margin-top:110px;margin-left:20px;}
.sidebar h2{float:left;margin-bottom:10px;font-weight:550;margin-top:10px;margin-left:15px;}
.boxtwi, .boxfac{width:250px;border:solid 1px #d3d4d6;clear:left;}
.boxtwinterno, .boxfacinterno{border:solid 1px #ffffff;background:#d3d4d6;padding:10px;width:228p x;}
.boxfacinterno{}
.cont{margin-left:10px;width:180px;float:left;}
.boxtwinterno p{text-align:justify;width:180px;margin-bottom:0px;}
.boxtwinterno span{color:#ffffff;}
.iconbird{width:24px;height:26px;background:url(im g/twitter_blu.png) no-repeat;float:left;margin-bottom:10px;margin-left:10px;margin-top:10px;}
.icontweet{width:20px;height:20px;background:url(i mg/twitter_blu_piccolo.png) no-repeat;float:left;}
.septwi{width:216px;height:10px;background:url(img/linee-twitter.png)no-repeat;margin-left:5px;margin-top:10px;margin-bottom:10px;}
.iconpag{width:33px;height:33px;border:solid 1px;float:left;}
.boxfacinterno p{text-align:left;width:190px;margin-bottom:0px;float:left;border:solid 1px;color:#2b4b98;fotn-size:11px;}
.boxfacinterno span{font-weight:400;}
.like{width:52px;height:17px;border:solid 1px;float:left;}
.partner {width:230px;padding-left:16px;}
.partner p{margin-bottom:0px;font-size:15px;}
.partner a>p{text-decoration:underline;margin-bottom:-10px;}

se ti serve anche quello dell'altra pag fammelo sapere thanks