@media screen and (min-width: 300px) {
	.stmp01, .stmp02, .stmp03, .stmp04, .stmp05, .stmp06 {
		float: left;
		width: calc(100% / 2);
		height: 190px;
		background: url(../i/getbg.png) no-repeat;
		background-size: 100%;
	}
	.stmp01 img, .stmp02 img, .stmp03 img, .stmp04 img, .stmp05 img, .stmp06 img {
		width: 190px;
	}
}