header nav.nav01 ul li.nav_menu:nth-of-type(2){
    background:#2F2E2B;
    color:#fff;
}
#sub-midashi .midashi-pic{
    background-image:url(../images/midashi-concept.jpg);
}
#sub-midashi .midashi-pic-space{
    background-image:url(../images/midashi-space.jpg);
}
#sub-block-low .item-step .pic01{
    background: url(../images/strength01.jpg);  
}
#sub-block-low .item-step .pic02{
    background: url(../images/strength02.jpg);
}
#sub-block-low .item-step .pic03{
    background: url(../images/strength03.jpg);
}