.product-about{background:#000 url(../img/index/main_img.jpg) center center no-repeat}.product-img{bottom:10px;right:20px}.fui-subtitle,.fui-ttl{font-size:22px;font-weight:700}.fui-subtitle{font-size:18px;margin-top:10px;margin-bottom:10px}.fui-list{list-style-type:disc;padding-left:20px}.fui-list li{font-size:16px;margin-bottom:10px}.fui-txt{font-size:16px;margin-top:20px}@media only screen and (max-width:640px){.product-about{background:#000 url(../img/index/main_img_sp.jpg) center bottom no-repeat;background-size:cover}}