html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    font-size: 16px;
    background-color: #fff;

}

.container {
    max-width: 1300px;
}

.main>.container {
    margin: 0 auto;
    padding: .375em;
    display: flex;
    flex-flow: row nowrap;
    /* 居中 */
    justify-content: center;
}

.left {
    display: block;
    width: 75%;
}

.right {
    display: block;
    width: 75%;
}

.right>.date {
    margin-bottom: .375em;
    font-size: .8em;
    color: #999;
}

.right>.container {
    margin: 0 auto;
    width: 100%;
    display: flex;
    flex-flow: row nowrap;
    justify-content: space-between
}

.main>.container>.left {
    margin-right: .375em;
}

body a:hover {
    text-decoration: dashed;
}

body a {
    color: #3170a7;
    text-decoration: none;
}

.header {
    background-color: #e6e3e3;
    font-size: 0.8em;
}

.header>.container {
    margin: 0 auto;
    padding: .375em;
    display: flex;
    flex-flow: row nowrap;
    justify-content: space-between
}

.banner {
    height: 150px;
}

.banner>.container {
    height: 100%;
    margin: 0 auto;
    padding: .375em;
    display: flex;
    flex-flow: row nowrap;
    justify-content: space-between;
    align-items: center;
}

.banner {
    width: 100%;
}

.banner h1 {
    font-size: 2em;
}

.banner .slogan {
    max-width: 50%;
    font-size: 1.2em;
}

nav {
    height: 50px;
    background: #3d55a7;
    line-height: 50px;
    position: relative;
}

nav>.container {
    height: 100%;
    margin: 0 auto;
    display: flex;
    flex-flow: row nowrap;
    justify-content: space-between;
    align-items: center;
}

nav {position:relative}
nav a{
    font-size:16px;
    color:#ffffff !important;
    /* 加粗 */
    font-weight: 700;
}

nav span {
    padding: 0 50px;
}

nav .now {
    height: 53px;
    margin-top: -3px;
    line-height: 55px;
    background-color: #1d3897;
    font-size: 16px;
    font-weight: 700;
}

.foot {
    background-color: #e6e3e3;
    height: 150px;
}

.foot>.container {
    height: 100%;
    margin: 0 auto;
    display: flex;
    flex-flow: row nowrap;
    justify-content: space-between;
    align-items: center;
}

.post>.container {
    width: 75%;
    margin: 1em auto;
    padding: .35em;
    border: #e6e3e3 solid 1px;
}

.post>.container>.title {
    margin-bottom: .375em;
    /* 居中 */
    text-align: center;
}
.post>.container>.content {
    margin: 0px 10%;
}

.catagories>.container {
    width: 75%;
    margin: 1em auto;
    padding: .35em;
    border: #e6e3e3 solid 1px;
}