a {
    text-decoration: none;
}
body {
    font-size: 20px;
    width: 100%;
    margin: 0 auto;
    font-family: '微软雅黑';
    align: center;
}

header {
    width: 100%;
    position: relative;
    height: 80px;
    background-image: url(img/banner.jpg);
    background-size: 75%;
}

footer {
    width: 100%;
    position: relative;
    font-size: 16px;
    color: rgb(255, 255, 255);
    text-align: center;
    padding-top: 15px;
    height: 40px;
    background-color: #00388f;
    background-image: url(img/banner.jpg);
    background-size: 90%;
}

#container {
    padding-left: 100px;
    position: relative;
    z-index: 1;
    margin: 0 auto;
}
/*设置logo向左浮动*/
header > #container > a > img {
    width: 250px;
    display: block;
    float: left;
    margin: 8px 15px;
}
/*设置导航区域向右浮动*/
header > #container > nav {
    float: right;
}

nav > a {
    text-decoration: none;
    font-size: 18px;
    line-height: 74px;
    color: rgb(255, 255, 255);
    text-align: center;
    display: block;
    float: left;
    width: 120px;
}
#headerbottom {
    position: absolute;
    bottom: 0;
    left: 0px;
    width: 100%;
    height: 6px;
    background-color: rgb(196, 224, 247);
}
/*知识点：子元素的伪类选择器*/
nav > a:nth-child(1) {
    background-color: rgb(235, 168, 0);
}
nav > a:nth-child(2) {
    background-color: rgb(194, 3, 45);
}
nav > a:nth-child(3) {
    background-color: rgb(4, 71, 197);
}
nav > a:hover {
    padding-bottom: 6px;
}
h1,
h2 {
    text-align: center;
    color: rgb(255, 255, 255);
    line-height: 1.5em;
}
h1 {
    font-size: 36px;
}
h2 {
    font-size: 26px;
}

.main {
    text-align: center;
    width: 100%;
    background-color: #008080;
    padding: 40px 0 20px 0;
    background-image: url(img/bg.jpg);
    box-shadow: 1px 2px 3px 2px rgb(0, 0, 0, 0.2);
}

div.main > video {
    width: 80%;
    margin: 0 auto;
    text-align: center;
}

#titlepage {
    position: relative;
    text-align: left;
    width: 650px;
    height: 364px;
    display: inline-block;
}
#titlepage .banner {
    position: relative;
    width: 650px;
    height: 364px;
    overflow: hidden;
}
#titlepage .banner .banner-dot {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
}
#titlepage .banner .banner-dot li {
    float: left;
    width: 10px;
    height: 10px;
    border-radius: 5px;
    background-color: #ccc;
    text-indent: -9999px;
    margin-left: 10px;
    cursor: pointer;
}
#titlepage .banner .banner-dot li.active {
    background-color: red;
}
#titlepage .arrow {
    position: absolute;
    top: 140px;
    width: 60px;
    height: 60px;
    z-index: 10;
    cursor: pointer;
}
#titlepage .arrow.prev {
    left: -30px;
    transform: rotate(-90deg);
    background: url('./img/arrow.png') center center no-repeat;
}
#titlepage .arrow.next {
    right: -30px;
    transform: rotate(90deg);
    background: url('./img/arrow.png') center center no-repeat;
}
#titlepage .banner-wrapper {
    width: 650px;
    height: 364px;
    transition: all 0.3s;
    transform: translateX(0);
}

#titlepage .banner-wrapper img {
    float: left;
    width: 650px;
}

#titlepage > img {
    width: 650px;
}

/*首页主图右侧简介*/
div.intro {
    text-align: left;
    color: rgb(255, 255, 255);
    display: inline-block;
    line-height: 2em;
    margin-left: 40px;
    vertical-align: top;
    margin-top: 60px;
}
.content {
    margin-top: 20px;
    padding: 50px 200px;
    display: block;
    line-height: 1.75em;
    background-color: #f5f5f5;
    box-shadow: 1px 2px 3px 2px rgb(0, 0, 0, 0.3);
}
li > img {
    width: 36px;
    vertical-align: middle;
    padding: 7px 10px 10px 0px;
}
li {
    list-style-type: none;
    font-size: 24px;
    font-weight: 500;
}

button {
    width: 120px;
    border-width: 0px;
    padding: 10px;
    margin: 10px 10px 0px 0px;
    background-color: #0093e3;
    font-size: 18px;
    border-radius: 10px;
}
button > a {
    color: rgb(255, 255, 255);
}

article {
    margin: 0 150px;
}
article > h1 {
    margin-top: 50px;
    text-align: center;
    color: #00388f;
}
article > h2 {
    text-align: center;
    color: #00388f;
    margin-top: -20px;
}

article > p.sourcejournal,
p.author,
p.insertimg {
    text-indent: 0;
    text-align: center;
    font-family: '宋体', 'Times New Roman', Times, serif;
}

article > p {
    margin: 10px auto;
    text-align: justify;
    font-family: '宋体', 'Times New Roman', Times, serif;
    text-indent: 2em;
    line-height: 1.5em;
}

article > h3,
h4 {
    font-family: '宋体', 'Times New Roman', Times, serif;
    text-indent: 2em;
}

article > ul > li {
    font-family: '宋体', 'Times New Roman', Times, serif;
    line-height: 2em;
    font-size: 16px;
}
article > ul > li > a:visited {
    color: rgb(0, 0, 0);
}

article > ul > li > a:link {
    text-decoration: none;
    color: rgb(0, 0, 0);
}

.tablecard {
    background-color: #faf0e6;
    padding: 10px 0 0 20px;
    margin-bottom: 30px;
    box-shadow: 3px 3px 4px 0px rgb(0, 0, 0, 0.2);
    border: whitesmoke 1px;
}

td {
    padding: 10px;
    font-size: 16px;
    color: rgb(65, 65, 65);
    line-height: 1.75em;
}

.totop {
    width: 100px;
    height: 50px;
    position: relative;
    left: 1075px;
    bottom: 80px;
    font-size: 14px;
    text-align: center;
    opacity: 0.3;
}

div.totop > a:link {
    color: rgb(0, 0, 0);
}

div.totop > a:visited {
    color: rgb(0, 0, 0);
}