.picture-list{
    padding: 25px 0;
    overflow: hidden;
}
.picture-list .list-item{
    position: relative;
    float: left;
    width: 280px;
    height: 255px;
    margin: 15px 0;
    color: #333;
}
.picture-list .list-item.middle{
    margin: 15px 55px;
}
.picture-list .list-item .image{
    width: 280px;
    height: 190px;
    line-height: 190px;
    text-align: center;
    background-color: #dde1df;
}
.picture-list .list-item .image>img {
    max-width: 100%;
    max-height: 100%;
}
.picture-list .list-item .content h2{
    text-align: center;
    font-size: 16px;
    line-height: 28px;
    margin-top: 12px;
    word-break: break-all;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
    max-height: 50px;
    padding: 0 1.5em;
}

/* 移动端适配 */
@media screen and (max-width: 480px){
    .picture-list .list-item{
        float: none;
        display: block;
        margin: 15px auto;
    }
    .picture-list .list-item.middle{
        margin: 15px auto;
    }
}