@media screen and (max-width: 750px) {
    .web {
		display: none;
	}
	.phone-container {
		display: block;
	}
}

/* 大于等于 750px 的样式 */
@media screen and (min-width: 750px) {
    .web {
		display: block;
	}
	.phone-container {
		display: none;
	}
}