body {
    color:#000000;
    background-color:lightseagreen;
    height: auto;
    background-size: auto 100%;
    margin: 0;
    overflow-x: hidden;
    -webkit-tap-highlight-color: transparent;
    -webkit-user-select: none;
}

#container {
    margin-top: 100px;
    margin-left:auto;
    margin-right:auto;
    text-align:center;
    width: 576px;
    box-shadow: 2px 2px 15px #ff0000;
}

#search-kw {
    display: inline-block;
    width: 460px;
    font-size: 14px;
    outline: 0;
    border: 1px solid #3EA0FC;
    height: 36px;
    padding: 0 5px;
    -webkit-appearance: none;
    line-height: 36px;
    font-family: inherit;
}

.btn {
    display: inline-block;
    width: 102px;
    height: 38px;
    background-color: #ff0000;
    background-repeat: no-repeat;
    line-height: 38px;
    cursor: pointer;
    text-align: center;
    font-size: 14px;
    color: #fff;
    margin-left: -3px;
}

.search_web{
    margin: auto;
    width: 580px;
    line-height: 24px;
    height: 24px;
    font-size: 14px;
    margin-top: 10px;
    box-shadow: 2px 2px 5px #00dcff;
}

#urls{
    width: 1000px;
    height: auto;
    margin: auto;
    margin-top: 50px;
    text-align: center;
}

.link{
    display: inline-block;
    margin: 10px 3px;
    border: 1px solid #09fbee;
    width: 200px;
    height: 120px;
    line-height: 120px;
    text-decoration: none;
    color: white;
    background-repeat: no-repeat;
    background-position: center;
    background-size: auto;
    box-shadow: 0px 0px 10px #09fbee;
}
.link:hover{
    opacity: 0.9;
    color: red;
}
.swdn_oa{
    background-color: lightskyblue;
    background-image: url("http://oa.swdnkj.com:89/seeyon/fileUpload.do?method=showRTE&type=image&fileId=5838236260333275297");
    background-size: cover;
}
.swdnkj{
    background-color: #f1d02e;
    background-image: url("../images/swdnkj.png");
}
.csdn{
    background-color: rgb(123, 224, 12);
    background-image: url("../images/csdn-logo.png");
}
.baidu{
    background-color: rgb(117, 0, 138);
    background-image: url("../images/baiduditu_logo.png");
}
.zhihu{
    background-color: rgb(131, 156, 240);
    background-image: url("../images/zhihu_logo.png");
    background-size: cover;
}
.ithome{
    background-color: rgb(131, 156, 240);
    background-image: url("../images/ithome_logo.png");
    background-size: cover;
}
.bilibili{
    background-color: rgb(131, 156, 240);
    background-image: url("../images/bilibili_logo.png");
    background-size: cover;
}
.weibo{
    background-color: rgb(131, 156, 240);
    background-image: url("../images/weibo_logo.png");
    background-size: cover;
}