.nav-area {
    width: 640px;
    height: 6.5rem;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
}

.nav-li {
    width: 120px;
    height: 5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.nav-msg,
.nav-msg a {
    width: 120px;
    height: 1rem;
    margin-top: .5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: #000;
    font-size: 1rem;
}

.op-area {
    width: 640px;
    height: 5rem;
    margin-top: 1rem;
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    align-items: center;
}

.op-area-btn {
    width: 300px;
    height: 4.5rem;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
}

.op-msg {
    width: 200px;
    height: 1rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: #fff;
    font-size: 1.1rem;
    letter-spacing: 1px;
    font-weight: 600;
}

.c-title-area {
    width: 640px;
    height: 2.4rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.c-title-msg {
    width: 160px;
    height: 1.8rem;
    font-size: 1.2rem;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    font-weight: 600;
    letter-spacing: 4px;
}

.c-title-line {
    width: 100px;
    height: .2rem;
    margin-top: .2rem;
    background-color: #0185ff;
}

.news-area {
    width: 620px;
    height: 15rem;
    margin: 1rem auto 0rem auto;
    display: flex;
    flex-direction: column;
}

.c-content {
    width: 620px;
    height: 12rem;
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    background-color: #f6f5f5;
    justify-content: center;
    align-items: center;
}

.c-ul {
    width: 600px;
    height: 12rem;
    text-decoration: none;
}

.c-ul li {
    width: 600px;
    height: 2.5rem;
    line-height: 2.5rem;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    list-style-type: none;
}

.c-ul li a {
    font-size: 1rem;
    color: #333333;
}

.dj-area {
    width: 640px;
    height: 4rem;
    background-size: cover;
    color: #fdecd2;
    margin-top: 1rem;
    font-size: 1.3rem;
    font-weight: 600;
    letter-spacing: 2px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-position: center 0;
    background-repeat: no-repeat;
}

.sys-area {
    width: 640px;
    height: 4rem;
    background-size: cover;
    color: #fff;
    margin-top: 1rem;
    padding-left: .2rem;
    font-size: 1.3rem;
    font-weight: 600;
    letter-spacing: 1px;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    background-position: center 0;
    background-repeat: no-repeat;
}

/**网页变灰色**/
/* html {
    filter: progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);
    -webkit-filter: grayscale(100%);
} */