.adv{ overflow: hidden; height: auto;}
.adv .item {    float:left;	width: 27%;        margin: .1rem .2rem;    text-align: center;}
.adv .item img{ display: block; padding-bottom: 0.1rem; }
.adv .item:last-of-type {
    margin-right: 0rem;
}
.adv .item h1 {    font-size: .24rem;    color: #458eea;    font-weight: normal;}

.adv-txt {
    margin: .3rem 0;
    text-indent: 2em;
    font-size: .24rem; clear: both;
}
.adv-txt span {
    color: #f00;
}

.about-doc-title {    margin: 0.3rem auto;}