body{ margin-top:0px;}
.hr_01{ background:url(../about/_img1/header01.jpg) no-repeat top left; width:320px; height:117px;}
.hr_02{ background:url(../about/_img1/header02.jpg) no-repeat top left; width:320px; height:117px;}
.hr_03{ background:url(../about/_img1/header03.jpg) no-repeat top left; width:320px; height:117px;}
.mebg{ background:url(../about/_img1/mebg.jpg) repeat-x; height:46px;}