.logo_sciences{top:5px;left:5px;width:50px;height:50px;display:block;box-shadow: 0 4px 12px  rgba(0, 0,0, 1.7);position:relative;} 
	#back,#stop{top:5px; right:5px;width:35px;height:35px;position:absolute;border: 2px outset #3DE5D1;box-shadow: 0 4px 12px  rgba(0, 0,0, 1.7);z-index:4;}
	#back:hover{cursor:pointer;box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);}	
	#stop{display:none;border-radius: 10px;border: 2px inset red;box-shadow: 0 4px 12px  rgba(255, 0,0, 1.7);}
	#stop:hover,#back:hover{cursor:pointer;box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);}
	#haut{bottom:4%;right:-1%;width:20px;height:30px;position:absolute;z-index:4;display:none;} 
	#debut{top:3px;right:3px;width:45px;height:45px;position:absolute;display:none;z-index:20}
	#debut:hover{cursor:pointer;}
#sciences-sid{top:20%;left:1%;width:98%;height:75%;margin-bottom:10px;border-radius: 10px;position:absolute;border: 4px inset #ffffcc;box-shadow: 0 4px 12px  rgba(0, 0,0, 1.7);background:url(./image/fond.png)no-repeat;-moz-background-size: cover;-webkit-background-size: cover;background-size: cover;box-shadow: 0 12px 8px rgba(0, 0,0, 0.7);z-index:0;} 
	#sid{top:1%;left:1%;width:98%;height:98%;position:absolute;z-index:0;} 
	.gauche_droite{top:0%;width:24%;height:100%;text-align:center;background:transparent;z-index:1;overflow: auto;margin:0px;position:absolute;}
	#aside-gauche-sid{left:0%;} 
	#aside-droite-sid{right:0%;} 
	.div-sid{width:95%;height:10%;font-size:12px;line-height:10px;box-shadow: 0 2px 2px rgba(0,0,0, 0.5);background:url(./image/cadre_vert.png)no-repeat;border-radius: 10px;margin:3px;margin-left:0px;position:relative;color:brown; font-weight:bold;text-align:center;z-index:10;display:block;border: 4px inset gold;-moz-background-size: cover;-webkit-background-size: cover;background-size: cover;}
	#sid-a,#sid-b,#sid-c,#sid-d,#sid-e,#sid-f,#sid-g,#sid-ah,#sid-ai,#sid-aj,#sid-ak,#sid-al,#sid-h,#sid-i,#sid-j,#sid-k,#sid-l,#sid-m,#sid-n,#sid-o,#sid-p,#sid-r,#sid-s,#sid-t,#sid-u,#sid-v,#sid-w,#sid-z,#sid-aa,#sid-ab,#sid-ac,#sid-ad,#sid-ae,#sid-af,#sid-ag{padding-top:5px;} 
	#sid-titre{height:80px;} 
	.div-sid:hover{cursor:pointer;background: lime;border-radius: 10px;} 
	.video-sid{display:none;top:5%;left:25%;width:50%;height:90%;background:black;padding:0px;margin:0px;position:absolute;z-index:3;border:8px inset gold;box-shadow: 0 4px 12px  rgba(0, 0,0, 1.7);}
/*