CSS vraagjes.

@charset "UTF-8";
/* Css by: Marijn Kok | Vanmarijn.nl */
/* Auteur: Marijn Kok */
/* VM-Productions */
/* CSS Document */

body { background:url(images/bg.png) repeat-x #FFF; margin:0 px; padding:0 px;}
#main {    margin:0 auto;}

/*Login form*/
#login {background:url(images/top_login.png); width:100%; height:47px;; padding-top:10px;}
#login form{padding-right:100px; text-align:right;}

/*Header*/
#header {width:950px;height:48px;margin:0 auto; padding-top:20px;}
#logo {width:273px; height:48px; float:left;} 
#social {text-align:right; height:48px; padding-top:24px; }

/*Menu*/
#menu {width:930px; height:46px; background:url(images/menu.png) no-repeat #FFF; margin:0 auto; padding-left:20px; padding-top:9px; word-spacing:20px;}
#menu a:link {font-family:Tahoma, Geneva, sans-serif;color:#FFF;font-size:18px;}
#menu a:visited {font-family:Tahoma, Geneva, sans-serif;color:#FFF;font-size:18px;}
#menu a:hover {font-family:Tahoma, Geneva, sans-serif;color:#060;font-size:18px;}
#menu a:active {font-family:Tahoma, Geneva, sans-serif;color:#FF0;font-size:18px;}

/*sidebar*/
#mid-main {width:950px; height:auto; background:#FFF; margin:0 auto;}
#sidebar {width:210px;  height:auto;margin:0 auto; background:#FFF; float:left; padding-left:4px; padding-right:4px;}
#contact {background:url(images/contact.png) no-repeat #FFF; height:96px; width:202px; padding-top:1px; padding-left:10px; margin-top:5px;}
#contact h1 {font-size:16px; color:#FFF;}
#contact p {font-size:14px; color:#FFF; }
#promo {background:url(images/promo.png) no-repeat #FFF; height:96px; width:192px; padding-top:1px; padding-left:10px; margin-top:5px; text-align:center;}
#promo h1{font-size:16px; font-weight:bold; color:#FFF;}
#promo p{font-size:14px; color:#FFF;}
.promo_button{background:url(images/promo_button.png) no-repeat; text-align:center; width:100px; height:40px;}
#domein {width:202px; height:167px; background:url(images/domein.png) no-repeat #FFF; margin-top:5px; padding-top:4px;}
#domein h1{font-size:16px; color:#FFF; text-align:center;} 
#domein p{padding-left:4px;}
.zoek{background:#FFF no-repeat; width:132px; height:21px;}
#domein span{font-size:16px; color:#FFF; padding-left:3px;}
.zoek_button{background:url(images/domein_button.png) no-repeat; width:81px; height:23px; float:right; margin-right:6px; margin-top:10px;}

/*Contet*/
#content {width:950px; height:200px; background:#FFF;}
#content h1{text-align:left; padding-left:10px; padding-top:10px; font-size:20px; color:#000;}
#content h1 span{color:#0C0;}
.under_tekst{color:#0C0; font-size:12px;}
#content hr {color:#000; background:#fcb300; height:3px; border:0; width:600px; margin-left:0px;}
#content p {font-size:14px; color:#000; padding-right:6px;}

/*footer*/
#footer {background:url(images/footer.png) no-repeat; margin:0 auto; width:950px; height:50px; }
#footer p{font-size:14px; color:#FFF;}
.left {float:left; padding-left:4px;}
.right {float:right; padding-right:4px;}
#footer a:link{color:#666; text-decoration:none;}
#footer a:visited{color:#666; text-decoration:none;}
#footer a:hover {color:#090; text-decoration:blink;}
#footer a:active {color:#666; text-decoration:none;}