#clearfloat {
clear:both;
}

#bk_all {
width:100%;
height:100%;
position:absolute;
top:0px;
left:0px;
right:0px;
bottom:0px;
text-align:center;
}

#top_bg {
background-image:url(../graphic/rep_top.png);
background-repeat:repeat-x;
position:relative;
width:100%;
height:127px;
right:0px;
left:0px;
}

#midle_bg {
background-color:#ebebeb;
position:relative;
width:100%;
left:0px;
right:0px;
}

#botom_bg {
background:#242424;
position:relative
width:100%;
right:0px;
left:0px;
height:137px;
}

#a {
margin-left:auto;
margin-right:auto;
background-color:#000033;
width:100px;
height:1000px;
}