body {
    font-size: 16px;
    font-family: '微软雅黑';
}
a {
    color: #333;
    text-decoration: none;
}
header .d-links{
    padding-top: 62px;
    text-align: right;
    color: #fff;
}
header .d-links a {
    color: #fff;
}

nav {
    margin-bottom: 50px;
    height: 56px;
    background:  no-repeat center center #015293;
    background-size: auto 100%; 
}
nav .main {
    display: flex;
    justify-content: space-between;
}
nav a {
    margin: 0 20px;
    color: #fff;
    line-height: 56px;
    height: 56px;
    text-align: center;
    font-size: 18px;
}
.main {
    width: 1200px;
    margin: 0 auto;
}
footer {
    margin-top: 50px;
    padding: 40px 0;
    background:  #D0E3F8;
    color: #004795;
    line-height: 36px;
    font-size: 18px;
    text-align: center;
}