Problém s CSS

Ahoj lidi,
mám problém s CSS,chci aby div-center byl presne mezi left a right? porad mi to nejde.

/*----------style.css-------------*/
.header {/*hlavička*/

position: absolute;
top: 5px;
left: 60px;
width: 900px;
height: 80px;

border-width: 1px;
border-style: solid;
border-color: rgb(0,0,0);

background-color: rgb(217,216,213);

}

.header2 { /*pruh pod hlavičkou*/

position: absolute;
top: 90px;
left: 60px;
width: 900px;
height: 20px;

border-width: 1px;
border-style: solid;
border-color: rgb(0,0,0);

background-color: rgb(184,201,192);

}
/*-----------základní layout----------------------*/

.main { /*hlavní stránka*/

position: absolute;
top: 115px;
left: 60px;
width: 900px;
/*
border-width: 1px;
border-style: solid;
border-color: rgb(0,0,0);

background-color: rgb(184,201,192);
*/
}

.left { /*levý sloupec pro menu*/

float: left; /*obtékání textu*/
width: 165px;


/*
border-width: 1px;
border-style: solid;
border-color: rgb(0,0,0);

background-color: rgb(255,255,204);
*/
}

.center {
display: block;
float:left;
width: 560px;


border-style: solid;
border-width: 1px;
border-color: rgb(51,0,204);
background-color: rgb(255,255,204);

}

.right {

display: block;
float: right;
width: 165px;
/*
border-style: solid;
border-width: 1px;
border-color: rgb(51,0,204);
background-color: rgb(255,255,204);
*/
}

/*--------------------------------------------------------------*/

.box_left {
position: relative;
width: 165px;
height: 20px;
font-size: small;


border-style: solid;
border-width: 1px;
border-color: #B38F00;
color: #B38F00;
background-color: #FFE680;

}

.menu_left {

position: relative;
width: 165px;
height: 20px;
font-size: x-small;

border-style: solid;
border-width: 0 1 1 1;
border-color: #B38F00;
color: #FFF2BF;
background-color: #FEFAEB;

}

.box_right {
position: relative;
width: 165px;
height: 20px;
font-size: small;


border-style: solid;
border-width: 1px;
border-color: #B38F00;
color: #B38F00;
background-color: #FFE680;

}

.menu_right {

position: relative;
width: 165px;
height: 20px;
font-size: x-small;

border-style: solid;
border-width: 0 1 1 1;
border-color: #B38F00;
color: #FFF2BF;
background-color: #FEFAEB;

}



/*----------index.php-------------*/

<div class="header">
</div>


<div class="header2">
</div>


<div class="main">


<div class="left">

<div class="box_left">
</div>

<div class="menu_left">
</div>

</div>

<div class="center">
</div>

<div class="right">

<div class="box_right">
</div>

<div class="menu_right">
</div>

</div>


</div>

To je super! presne tohle jsem potreboval.Genialni stranka.Díky:-)