section.bo_contents_bnr {
    margin: 50px auto;
    max-width: 1040px;
    overflow: hidden;
}
section.bo_contents_bnr p {
    text-align: center;
    margin: 0 15px 20px;
    padding: 15px;
    background-color: #eee;
    font-size: 18px;
    font-weight: bold;
}
section.bo_contents_bnr li {
    margin: 15px;
}
section.bo_contents_bnr li img {
    width: 100%;
}

@media only screen and (min-width: 768px) {
section.bo_contents_bnr {
    margin: 100px auto 50px;
}
section.bo_contents_bnr p {
    font-size: 24px;
}
section.bo_contents_bnr li {
    float: left;
}
section.bo_contents_bnr li img {
    width: 490px;
}
}