h1 {
    color: brown;
    background-color: cornflowerblue;
}
span.title{
    display:block;
    width:100px;
    height: 15px;
    position:relative;
    top:-20px;
    text-align: center;
    background: white;
}
div.withTitle{
    width:450px;
    padding:10px 30px;
    margin-top:20px;
    border:2px solid #CCCCCC;
}
header, footer {
    padding: 10px 0 10px 0;
    width:100%;
    background:#B3B2CF;
    text-align:center;
}
header {
    font-size:1em;
    height: 40px;
}
main {
    height: 500px;
}
section {
    float: left;
    padding: 10px;
    margin:20px;
    width:70%;
    border: 1px solid threedface;
}
aside {
    position:relative;
    float:right;
    padding: 10px;
    margin:20px;
    width:150px;
    height:200px;
    border: 1px solid black;
}
footer {
    clear: both;
    margin-top: 50px;
    font-size:18px;
}
#logo {
    float : left;
    padding: 5px;
    font-family: "黑体"
}
body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
}
.navbar {
    overflow: hidden;
    background-color: #2e6e9e; 
}
.navbar a {
    float: left;
    font-size: 16px;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}
.subnav {
    float: left;
    overflow: hidden;
}
.subnav .subnavbtn {
    font-size: 16px;  
    border: none;
    outline: none;
    color: white;
    padding: 14px 16px;
    background-color: inherit;
    font-family: inherit;
    margin: 0;
}
.navbar a:hover, .subnav:hover .subnavbtn {
    background-color: #1d5987;
}
.subnav-content {
    display: none;
    position: absolute;
    left: 0;
    background-color: #1d5987;
    width: 100%;
    z-index: 1;
}
.subnav-content a {
    float: left;
    color: white;
    text-decoration: none;
}
.subnav-content a:hover {
    background-color: #1d5987;
    color: black;
}
.subnav:hover .subnav-content {
    display: block;
}
#Login {
    float: right;
    font-size: 16px;
    color: white;
    text-align: center;
    padding: 14px 20px;
    text-decoration: none;
}