@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;
}

}