html,
body {
   margin:0;
   padding:0;
   height:100%;
}
#container {
   min-height:100%;
   position:relative;
   background:black;
}
#header {
   background:black;
   padding:10px;
   color:white;
}
#body {
   padding:10px;
   padding-bottom:60px;
   background:#323232;
   color:white;
   background-image:url('img/kotiposti.png');
   background-repeat: no-repeat;
   background-size: contain;
   background-position: center;
}
#footer {
   position:absolute;
   bottom:0;
   width:100%;
   height:60px;
   background:black;
   text-align:center;
}