@charset "UTF-8";
/* CSS Document */

img{width: 100%;}
ul.btn_box {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}
ul.btn_box li {
    width: calc((100% - 420px) / 2);
	margin-bottom: 20px;
}

ul.btn_box li:nth-child(2n) {
    margin-left: 20px;
}
@media only screen and (max-width: 768px){
	ul.btn_box li {
    width: calc((100% - 20px) / 2);
}
}