html, body{
   margin:0px; 
   padding:0px; 
   font-family:Arial, sans-serif;
   background-image: url('background_big.JPG');    
   background-repeat: no-repeat;
   background-size: 1084px 1671px; 
}
<--div{position:relative;}-->
.clear{clear:both;}
header{height:47px;    padding-top:20px}
 A {
    text-decoration: none; /* Убирает подчеркивание для ссылок */
    color: black;
   }
    .address 
   { 
    position:absolute;
    width: 1024px; 
    align:right;
    top: 15px;
    font-family:Arial, sans-serif;
    font-size:9;
   }
   .menu 
   { 
    position:absolute;
    width: 1024px; 
    align:right;
    top: 60px;
    font-family:Arial, sans-serif;
    font-size:12;
    color:black;
    }
   .menu a:hover
   {
    background-color:#B5D4E2;
    color:firebrick;
   }
   .menu_SDMC
   { 
    align:right;
    background-color:#e7e7e7;
    font-family: Arial, sans-serif;
    font-size:12;
    color:navy;
    }
    
   .menu_SDMC a:hover
   {
    background-color:#B5D4E2;
    color:firebrick;
   }

   
   
#conteiner, header, main{
	width:1024px;
	/*margin:0px auto;*/
}
#conteiner{
	padding:0px 0px 0px 0px;
	box-sizing:border-box;
  	height:680px;
}
     #left{
        margin-top:147px; /*140*/
	    width:225px;
        align:left;
		height:auto;
		/*z-index:25;*/
		margin-left:0px; 
		float:left;
		opacity: 0.95; 
		filter: alpha(opacity=95);
	}
	#right{
        margin-top:130px;
        margin-left:40px;
		width:750px;
		float:left;
		font-size:15px;
		color:#000000;
	}
	#right p{margin:0px; padding:0px 0px 10px 0px;}
/*************далее стили для вертикального выпадающего меню при наведении**************************/
#menuVertical{width:100%;height:auto;}
	#menuVertical ul{
		display:block;
		width:100%;
		height:auto;
		margin:0px;
		padding:0px;
		list-style:none;
		position:relative;
		font-size:19;
	}
		#menuVertical ul li{display:block; width:100%; height:auto; position:relative;}
			#menuVertical ul li a{
				position:relative;
				display:block;
				width:100%;
				height:auto;
				box-sizing:border-box;
				font-size:13px;
				text-transform:uppercase;
				font-weight:bold;
				color:black;
				line-height:1.2em; 
                /*				padding:10px 15px;  */
                                                                  padding:13px 15px;
				border-top:0px solid #236A92;
				text-decoration:none;
			}
			#menuVertical ul  li:first-child a{border:0px;}
			#menuVertical ul li a:hover, #menuVertical ul li:hover a{
				background:#B5D4E2;
			}
			#menuVertical ul li ul{
				position:absolute;
				top:0px;
				left:100%;
				display:none;
				width:auto;
			}
			/*******показываем выпадашку при наведении ********/
			#menuVertical ul li:hover ul{display:block;}
				#menuVertical ul li ul li a{
					white-space:nowrap;
					text-transform:none;
					padding:15px 20px;
				}
					#menuVertical ul li ul li a:hover{
						background:#CCDDEE;
						color:black;