@media screen and (min-width: 768px) {
}
@media screen and (max-width: 767px) {
	.画像だけ画面いっぱいに表示 {
		display: block;
width: calc(100% + 60px);
max-width: none;
margin-left: -30px;
margin-right: -30px;
	}
}