.banner-ads {
    text-align: center;
    margin: 15px auto;
}

.banner-ads img {
    max-width: 100%;
}

.pc-hide {
    display: none;
}
.m-hide {
    display: block;
}

@media screen and (max-width:961px) {
    .pc-hide {
        display: block;
    }

    .m-hide {
        display: none;
    }

}