body {
    font-family: "Microsoft YaHei", sans-serif;
    background: #f7f9fc;
    margin: 0;
    padding: 0;
}
.navbar {
    background: #2a4365;
    color: white;
    padding: 10px;
}
.navbar a {
    color: white;
    margin-right: 10px;
    text-decoration: none;
}
.content {
    padding: 20px;
}
.alert {
    background: #d9edf7;
    border: 1px solid #bce8f1;
    padding: 10px;
    margin: 10px 0;
}