.text_div {
    text-align: center;
    font-size: 4vw;
    margin-top: 4vw;
    margin-bottom: 4vw;
    font-family: 黑体;
    font-weight: bold;
}

.title_line {
    border-bottom: 2px #000000 solid;
    margin-bottom: 40px;
    width: 10vw;
    margin-left: 45vw;
}

.text_img {
    position: absolute;
    color: #FFFFFF;
    font-size: 3vw;
    text-align: center;
    width: 100%;
    margin-left: -5%;
    margin-top: 20%;
    font-family: 黑体;
    font-weight: bold;
}

.subcategory-container_new {
    width: 90%;
    margin-left: 5%;

}

.subcategory-container_join {
    width: 30%;
    margin-left: 13%;
    float: left;
}

.subcategory-container_join .text_img_join {
    position: absolute;
    color: #FFFFFF;
    font-size: 3vw;
    text-align: center;
    width: 30%;
    margin-top: 4%;
    font-family: 黑体;
    font-weight: bold;
    z-index: 1;
}

@media only screen and (max-width: 750px) {
    .subcategory-container_join {
        width: 80%;
        margin-left: 10%;
    }

    .subcategory-container_join .text_img_join {
        width: 80%;
        margin-top: 20%;
    }
}

@media only screen and (min-width: 1200px) {
    .text_div {
        font-size: 45px;
    }
}

<!--
轮播样式

-->
ul, ol {
    padding: 0;
}

.banner {
    position: relative;
    overflow: auto;
    text-align: center;
    margin-top: 5px;
    width: 100%;
}

.banner li {
    list-style: none;
    width: 100%;
}

.banner ul li {
    float: left;
    width: 100%;
}

#b04 {
    width: 100%;
    /*max-height: 600px;*/
}

#b04 .dots {
    position: absolute;
    left: -26px;
    right: 0;
    bottom: 2vw;
}

#b04 .dots li {
    display: inline-block;
    width: 10px;
    height: 10px;
    margin-left: 4px;
    text-indent: -999em;
    border: 0 solid #fff;
    border-radius: 6px;
    background: #CCCCCC;
    cursor: pointer;
    opacity: .4;
    -webkit-transition: background .5s, opacity .5s;
    -moz-transition: background .5s, opacity .5s;
    transition: background .5s, opacity .5s;
}

#b04 .dots li.active {
    background: #fff;
    opacity: 1;
}

#b04 .arrow {
    position: absolute;
    top: 200px;
}

#b04 #al {
    left: 15px;
}

#b04 #ar {
    right: 15px;
}