.bnr>div {
    width: 100%;
    margin: 0 auto;
}

.bnr {
    display: block;
    text-align: center;
    padding-bottom: 20px;
}

@media screen and (max-width: 768px) {
    .bnr {
        text-align: left;
    }
}

@media screen and (min-width: 768px) {
    .bnr .ttl img {
        width: 40%;
        height: auto;
    }
}