.culture-title {
    width: 100%;
    text-align: center;
    padding: 20px 0;
    position: absolute;
    bottom: 8%;
    color: #cecece;
    font-size: 32px;
}

.t_m_list {
    width: 100%;
    margin: 0 auto;
    overflow: hidden;
}
.t_m_list ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.t_m_list ul li {
    float: left;
    width: 16.66666%;
    height: 100%;
    min-height: 360px;
    background-position: center center;
    background-size: cover;
}

.business h4 em {
    font-style: normal;
    color: #02b0d2;
}

.top_b {
    height: 910px;
    width: 100%;
    margin: 0 auto;
    position: relative;
    background-position: center center;
    background-size: cover;
}

@media only screen and (max-width: 768px) {
    .top_b {
        height: 380px;
    }

    .t_m_list ul li {
         min-height: 148px;
        width: 33.33%;
     }

    .culture-title {
        bottom: 40px;
        font-size: 20px;
    }

    .business h4 em {
        display: block;
        text-align: center;
        width: 100%;
    }
}