.ceo-wrap{
    display:flex;
}
.ceo-wrap {
    display: flex;
    height: 100%;
}

    .ceo-wrap .img {
        background: url(/template/img/sub/greeting_img.jpg) center no-repeat;
        background-size: cover;
        background-position: center;
        flex: 1;
    }
    #greeting {
        flex: 1;
    }

@media(max-width:767px){
    .ceo-wrap{
        flex-direction: column;
        height:700px !important;
    }
}