Background dans formulaire de saisi

html {
margin:0;
padding:0;
background: url(Images/bg2.jpg) no-repeat center fixed; 
-webkit-background-size: cover; /* pour Chrome et Safari */
-moz-background-size: cover; /* pour Firefox */ 
-o-background-size: cover; /* pour Opera */
background-size: cover; /* version standardisée */
font-family:Arial, Helvetica, sans-serif;
font-size:13px;
color:#fff;
}



#main_container{
width:902px;
height:auto;
margin:auto;
padding:0px;
}



/*---------------- menu tab----------------------*/
#menu_tab{
width:902px;
float:left;
padding:15px;
}

#header{
width:902px;
height:109px;
margin:auto;
padding:0 0 0 0;
background:url(images/top_menu_bg.png) no-repeat;behavior: url(iepngfix.htc);
background-position:center;
}

ul.menu {
list-style-type:none; display:block; width:630px; 
margin: auto; 
padding:90px 0 0 25px;
background:none;}

ul.menu li {
display:inline;
font-size:13px;
font-weight:bold;
line-height:28px;}

ul.menu li.divider {
display:block;
float:left;
width:1px;
height:31px;
padding:0px ;
margin:0px;
}

a.nav:link, a.nav:visited {
display:block; float:left; padding:0px; margin:0;width: auto; margin:0px 14px 0px 14px; text-align:center;
text-decoration:none; background:none; color:#fff;}

a.nav_selected:link, a.nav_selected:visited {
display:block; float:left; padding:0px; margin:0;width: auto;margin:0px 14px 0px 14px;text-align:center;
text-decoration:none; color: #E08040;}

a.nav:hover {
color: #E08040; text-decoration:none;}

/*----------------center_content----------------*/

#center_content{
width:902px;
float:left;
height:500px;
color:#fff;
}

#CC5819944{
width:580px;
margin:240px 0 0 0;
border-style:solid;
border-width:3px;
color:#000;
}

<?xml version="1.0" encoding="UTF-8"?>



<form url="new.php"

 window="_self"

 method="POST"

 fontname="MS Sans Serif"

border="3"

 width="549"

 height="424"

 bkcolor="0xFFFFFF"

 transparent="t"

 fontcolor="0x000000"

 themecolor="0xFFFF99"

 fontcolor2="#000000"

 bkcolor2="#FFFFFF"

 includeresults="false"

 emailuser="true"

 verifymessage="The E-Mail address you entered does not match !"

 reqmessage="One or More Fields are Required"

 invalidemailmsg="is an invalid address, please correct it."

 transition="0"

 autoresponseincluderesults="f"

 autoresponseaddtotop="f"

 usephp="true"

 disableclicktoactiveprompt="true"

 extensions="*.txt;*.gif;*.jpg;*.jpeg;*.zip;*.doc;*.png;*.pdf;*.rtf"

>



<hidden

 name="subject"

 value="Message Autour de la Guitare"

></hidden>



<textinput

 name="name"

 x="179"

 y="43"

 w="324"

 h="22"

 initvalue=""

 bkcolor="0xFFFFFF"

  fontname="Arial"

  fontcolor="0x000000"

 editable="true"

>

</textinput>



<textinput

 name="Email Address"

 x="180"

 y="101"

 w="323"

 h="22"

 initvalue=""

 bkcolor="0xFFFFFF"

  fontname="Arial"

  fontcolor="0x000000"

 emailbox="true"

 editable="true"

  restrict="email"

>

</textinput>



<textarea

 name="comment"

 x="180"

 y="156"

 w="322"

 h="120"

 initvalue=""

 wordwrap="true"

 editable="true"

 bkcolor="0xFFFFFF"

  fontsize="12"

  fontname="Arial"

  fontcolor="0x000000"

></textarea>



<submitbutton

 name="Submit Button"

 x="340"

 y="332"

 w="160"

 h="40"

 label="send"

 fontname="Georgia"

 fontcolor="0x000000"

 image="envoyer.png"

  fontsize="12"

></submitbutton>



<label

 name="My Text 1"

 x="36"

 y="162"

 w="122"

 h="19"

 text="Votre Message:"

 fontbold="bold"

  fontname="Arial CE"

  fontcolor="0xFFFFFF"

  fontsize="16"

></label>



<label

 name="My Text 3"

 x="36"

 y="102"

 w="100"

 h="19"

 text="Votre Email :"

 fontbold="bold"

  fontname="Arial CE"

  fontcolor="0xFFFFFF"

  fontsize="16"

></label>



<label

 name="My Text 4"

 x="36"

 y="44"

 w="94"

 h="19"

 text="Votre Nom :"

 fontbold="bold"

  fontname="Arial CE"

  fontcolor="0xFFFFFF"

  fontsize="16"

></label>



<resetbutton

 name="Reset Button"

 x="50"

 y="333"

 w="160"

 h="40"

 label="Reset"

 fontname="Arial"

 fontcolor="0x000000"

 image="annuler.png"

  fontsize="12"

></resetbutton>



</form>