.product-about{background:#000 url(../img/index/main_img.jpg) center center no-repeat}.product-img{bottom:40px;right:10px}.bnr-versionup-detail{max-width:760px;margin:0 auto 50px}.bnr-versionup-detail a{display:block;background-color:#315cbe;border-radius:4px;box-shadow:0 2px 2px 0 rgba(0,0,0,.12),0 2px 2px 0 rgba(0,0,0,.24);color:#fff;text-decoration:none;padding:10px 20px;line-height:1.2;-webkit-transition:all .2s ease;transition:all .2s ease;position:relative}.bnr-versionup-detail a:hover{color:#fff;text-decoration:none;box-shadow:0 4px 5px 0 rgba(0,0,0,.14),0 1px 10px 0 rgba(0,0,0,.12),0 2px 4px -1px rgba(0,0,0,.2);opacity:.8}.bnr-versionup-detail a::after{content:"";display:block;width:10px;height:10px;border-top:3px solid #fff;border-right:3px solid #fff;-webkit-transform:translateY(-50%) rotate(45deg);transform:translateY(-50%) rotate(45deg);position:absolute;right:20px;top:50%}.bnr-versionup-detail .bnr-versionup-ttl{font-family:'Open Sans Condensed',sans-serif;font-size:20px;font-weight:700}@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}.bnr-versionup-detail{max-width:100%;margin:0 auto 30px}.bnr-versionup-detail a{padding:10px 20px 10px 10px}.bnr-versionup-detail a::after{width:8px;height:8px;right:10px}.bnr-versionup-detail .bnr-versionup-ttl{font-size:18px}}