* {
 margin : 0px;
 padding : 0px;
 
}
html {
 height:100%;
 width:100%;
 margin : 0px;
 padding : 0px;
}
body {
 background:#eadfcd url(../design/bckMarianne.jpg) no-repeat 0% 50%;
 /*background:#eadfcd url(../design/montagne.jpg) no-repeat 0% 50%;*/
 -moz-background-size:cover;
 -webkit-background-size:cover;
 background-size:cover;
 
 height:100%;
 width:100%;
 overflow:hidden;
 
 
 
}
 
/* bloc conteneur de la fenetre */
.css3-windows-7 .fenster {
 -moz-border-radius:7px;
 -webkit-border-radius:7px;
 border-radius:7px;
 -moz-box-shadow:0 0 0 1px #eee inset, 0 0 15px rgba(0,0,0,0.9);
 -webkit-box-shadow:0 0 0 1px #eee inset, 0 0 15px rgba(0,0,0,0.9);
 box-shadow:0 0 0 1px #eee inset, 0 0 15px rgba(0,0,0,0.9);
 background-color:rgba(160,160,160,0.4);
 border:1px solid #000;
 height:146px;
 left:555px;
 padding-bottom:46px;
 position:absolute;
 top:125px;
 width:389px;
 z-index:1;
 min-width:200px;
 border : 1px solid black;
 
 
}
 
/* bloc d'option de la fenetre */
.css3-windows-7 .fenster .optionFen {
  position : relative;
 
  float: right;
  width: 108px;
 
}
 
 
.css3-windows-7 .fenster .optionFen .optReduc{
  position : relative;
  z-index: 10;
  float:left;
  white-space:nowrap;
  height: 22px;
  width: 30px;
  background:transparent url(../design/optReduc.png) no-repeat 0px -1px;
}
 
.css3-windows-7 .fenster .optionFen .optReduc:hover{
  position : relative;
  z-index: 10;
  float:left;
  white-space:nowrap;
  height: 22px;
  width: 30px;
  background:transparent url(../design/optReducH.png) no-repeat 0px -1px;
}
.css3-windows-7 .fenster .optionFen .optAgr{
  position : relative;
  z-index: 10;
  float:left;
  white-space:nowrap;
  height: 22px;
  width: 28px;
  background:transparent url(../design/optAgr.png) no-repeat 0px -1px;
}
.css3-windows-7 .fenster .optionFen .optAgr:hover{
  position : relative;
  z-index: 10;
  float:left;
  white-space:nowrap;
  height: 22px;
  width: 28px;
  background:transparent url(../design/optAgrH.png) no-repeat 0px -1px;
}
 
.css3-windows-7 .fenster .optionFen .optClose{
  position : relative;
  z-index: 10;
  float:left;
  white-space:nowrap;
  height: 22px;
  width: 46px;
  background:transparent url(../design/optClose.png) no-repeat -1px -1px;
}
.css3-windows-7 .fenster .optionFen .optClose:hover{
  position : relative;
  z-index: 10;
  float:left;
  white-space:nowrap;
  height: 22px;
  width: 46px;
  background:transparent url(../design/optCloseH.png) no-repeat -1px -1px;
}
 
/* titre de la fenetre  */
.css3-windows-7 .fenster .title {
 background:transparent url(../design/folder.png) no-repeat 2px 2px;
 color:#000;
 cursor:move;
 font:normal 12px/16px "Segoe UI",Arial,sans-serif;
 height:16px;
 overflow:hidden;
 padding:6px 0 8px 58px;
 text-overflow:ellipsis;
 text-shadow:0 0 1px #fff, 3px 3px 5px #fff, -3px -3px 5px #fff, -3px 3px 5px #fff, 3px -3px 5px #fff;
 white-space:nowrap;
 
}
 
 
/* bloc du contenua l'intérieur du conteneur  */
.css3-windows-7 .fenster .inhalt {
-moz-border-radius:1px;
  -webkit-border-radius:1px;
  border-radius:1px;
  -moz-box-shadow:0 0 0 1px rgba(255,255,255,0.65);
  -webkit-box-shadow:0 0 0 1px rgba(255,255,255,0.65);
  box-shadow:0 0 0px 1px rgba(255,255,255,0.65);
  background-color:#fff;
  border:1px solid #666;
  color:#000;
  font:normal 12px/18px arial,sans-serif;
  height:100%;
  margin:0 6px;
  position:relative;
   
 
 
}
 
.css3-windows-7 .inhalt p {
 margin-bottom:10px;
}
 
.css3-windows-7 .inhalt img {
 background-color:#f1f1f1;
 border:1px solid #ddd;
 float:left;
 margin:0 20px 10px 0;
 padding:1px;
}
 
/* Div du contenu  qui sera en scrolling  */
.css3-windows-7 .fenster .contentFen {
 color:#black;
 font:normal 12px/18px arial,sans-serif;
 overflow:auto;
 height:100%;
 position:relative;
 display:block;
}

 
        <div class="fenster" id="'.$this->idFen.'" style="top:'.$this->posXFen.';left:'.$this->posYFen.';height:'.$this->heightFen.';width:'.$this->widthFen.';display:'.$this->displayFen.';">
        <input type="hidden" value="" id="'.$this->idFen.'_width"></input>
   <input type="hidden" value="" id="'.$this->idFen.'_height"></input>
   <input type="hidden" value="" id="'.$this->idFen.'_top"></input>
   <input type="hidden" value="" id="'.$this->idFen.'_left"></input>
   <div class="optionFen">
   <div onclick="reduce(\''.$this->idFen.'\')" class="optReduc"></div>
   <div onclick="agr(\''.$this->idFen.'\')" class="optAgr"></div>
   <div onclick="closeFen(\''.$this->idFen.'\')" class="optClose"></div>
   </div>
   <h4 class="title" id="'. $this->idTitle.'">'. $this->titleFen.'</h4>
   
   /*
    *Ajout Corp de la fenetre
    */
   
   <div class="inhalt">'
   <div class="contentFen" id="'. $this->idCorpFen.'"></div>
   
   //Fin DIV inhalt
   </div>
 
   //Fin DIV Fenster
   </div>