@charset "UTF-8";

.banner251017 {
    width: 550px;
    margin: 0 auto 80px;
}

.banner251017 a,
.banner251017 img {
    display: block;
    width: 100%;
    height: auto;
}

.banner251017 a:hover {
    opacity: 0.8;
}

/*644px以下*/

@media only screen and (max-width: 644px) {
    .banner251017 {
        width: 70%;
        margin: 0 auto 80px;
    }
}