"

From 2014.igem.org

1. topheader{

   display:block;
   position:absolute;
   top:-15px;
   width:100%;
   margin-bottom:-120px;
   position:relative;

}

1. BotArrow{

   position: relative;-
   z-index:2;
   bottom:42px;
   margin-bottom:-42px;

}

1. PBlogo {

   position:relative;
   bottom:580px;
   left:30px;