@media screen and (max-width: 640px) {
.if_link {
    float: left;
    position: relative;
    border: 1px solid transparent;
    width: 48%;
    margin: 2px;
    box-sizing: border-box;
    height: 150px;
    overflow: hidden;
}

.tf_link {
    font-size: 12px;
    width: 100%;
    text-align: left;
    color: #fff;
    line-height: 1.2;
    border: 1px solid transparent;
    background: #C70F88;
    opacity: 0.8;
    bottom: 0px;
    position: absolute;
    padding: 3px;
}

.f_image img {
    width: 100%;
    height: auto;
    border: none;
    min-height: 135px;
}

.article-body h2{
    background: #f7f7f7;
    padding: 20px 15px 18px;
    color: #333;
    border-left: 9px solid #9e12a7;
    line-height: 40px;
}


.box27 {
    position: relative;
    margin: 2em 0;
    padding: 0.5em 1em;
    border: solid 3px #9e12a7;
}

.box27 .box-title {
    position: absolute;
    display: inline-block;
    top: -27px;
    left: -3px;
    padding: 0 9px;
    height: 25px;
    line-height: 25px;
    vertical-align: middle;
    font-size: 17px;
    background: #9e12a7;
    color: #ffffff;
    font-weight: bold;
    border-radius: 5px 5px 0 0;
}


}