.clearfix:after {
    content: ".";
    clear: both;
    height: 0;
    overflow: hidden;
    visibility: hidden;
    display: block;
}

.clearfix {
    zoom: 1;
}

.content ul {
    margin-top: 20px;
    margin-bottom: 47px;
}

.content ul li {
    float: left;
    margin-right: 26px;
    margin-top: 26px;
}

.content ul li:nth-child(1),
.content ul li:nth-child(2),
.content ul li:nth-child(3),
.content ul li:nth-child(4) {
    margin-top: 0;
}

.content ul li:hover .bottom .title {
    color: #3A6EEA;
}

.content ul li:hover .pic {
    transform: scale(1.3);
}

.content ul li:nth-child(4n) {
    margin-right: 0;
}

.content ul li a {
    width: 280px;
    display: block;
}

.content ul li a .picbox {
    margin-bottom: 7px;
    overflow: hidden;
}

.content ul li a .pic {
    display: block;
    width: 280px;
    height: 148px;
    transition: all .3s;
}

.content ul li a .bottom {
    width: 280px;
}

.content ul li a .bottom .title {
    width: 280px;
    height: 56px;
    font-family: MicrosoftYaHei;
    font-size: 18px;
    color: #666666;
    line-height: 28px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    word-wrap: break-word;
    word-break: break-all;
    box-sizing: border-box;
}