.navigation_head {
    margin: 41px 0 30px 0;
}

.navigation_head span {
    font-size: 14px;
    font-weight: 400;
    color: #999;
}

.navigation_head span a {
    font-size: 14px;
    font-weight: 400;
    color: #999;
}

.navigation_head .text {
    font-size: 14px;
    font-weight: 400;
    color: #333;
    cursor: pointer;
}

.top {
    width: 100%;
    height: 1px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 0px 0px 0px 0px;
    opacity: 1;
}

.navigation_head .text:hover {
    color: #49B849;
}

.version {
    width: 1200px;
    margin: 0 auto;
}

body {
    overflow-x: hidden;
}

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

.clearfix {
    zoom: 1;
}

.content ul {
    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: #31a67f;
}

.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;
}