.mid6 {
    background: #1c2536;
    overflow: hidden;
    height: 100%;
}

.mid6 div {
    color: #ffffff;
    width: 537px;
    margin: 0 auto;
    text-align: center;
}

#li .el-button {
    padding: 0;
    background: #3776ff;
    border: 0;
}

#li .el-button:focus,
#li .el-button:hover {
    padding: 0;
    background: #3776ff;
    border: 0;
}

#li .el-dropdown {
    display: inline-block;
    position: relative;
    color: #606266;
    font-size: 14px;
    top: -3px;
}
.hdtab ul {
    width: 90% !important;
    margin: auto !important;
    max-width: 1200px !important;
    justify-content: space-between !important
}
.hdtab ul li {
    cursor: pointer;
}

.banner {
    width: 100%;
}

.banner img {
    width: 100%;
}