.index-box{max-width:750px;padding-bottom: 2rem;}
.index-box img{width:100%}
.bottom-box{position: fixed;left:0;bottom: 0;width: 100%;}
.bottom-box .btn-box{max-width:750px;position: relative;}
.bottom-box .btn-box img{width: 100%;}
.bottom-box .btn-box .btn{position: absolute;width:4rem;height:1.1rem;right:0.7rem;top:0.6rem}
@media (min-width:750px) {
	.index-box{padding-bottom: 2.8rem;}
	.bottom-box .btn-box .btn{width:5.7rem;height:1.5rem;right:0.9rem;top:0.8rem}
}