ul div{
    list-style: none;
    margin:auto auto;
}
ul div a{
    color: black;
    text-decoration: none;
}
ul div a:hover{
    color: #4f9bff;
}
ul{
    display: flex;
    margin: 0 auto;
    padding: 0;
}
nav{
    width: 100%;
    margin: 0 auto;
}
.dropdown
{
    display:inline-block;
    margin: auto auto;
}

.dropdown-content
{
    font-size: 18px;
    display:none;
    position:absolute;
    background-color:#f9f9f9;
    width:60vw;
    box-shadow:0 8px 16px 0 rgba(0,0,0,0.2);
}
.dropdown-content2
{
    font-size: 18px;
    display:none;
    position:absolute;
    background-color:#f9f9f9;
    width:60vw;
    box-shadow:0 8px 16px 0 rgba(0,0,0,0.2);
}
.dropdown-content3
{

    display:none;
    position:absolute;
    background-color:#f9f9f9;
    width:120px;
    box-shadow:0  8px 16px 0  rgba(0,0,0,0.2);
    right: 0;

}

.dropdown:hover .dropdown-content
{
    display:block;
}
.dropdown:hover .dropdown-content2
{
    display:block;
}
.dropdown:hover .dropdown-content3
{
    display:block;
}
.dropdown:hover .dropbt{
    border-bottom: #4f9bff solid 2px;
}
div a{
    text-decoration: none;
    color: black;
}
div a:hover{
    color: #4f9bff;
}
.dropdown-content div{
    line-height: normal;
    margin: 30px auto;
}
.dropdown-content2 div{
    line-height: normal;
    margin: 30px auto;
}
.dropdown-content3 div{
    line-height: normal;
    margin: 10px auto;
}
nav{
    position: sticky;
    top: 0;
    background-color: white;
    z-index: 2147483647;
}
.connect{
    background-color: #4f9bff;
    color: white;
    width: fit-content;
    height: 40px;
    text-align: center;
    line-height: 40px;
    /* 设置背景阴影 */
    box-shadow: 10px 10px 10px #888888;
    /* 设置div四个角圆滑 */
    border-top-left-radius: 25px;
    border-bottom-right-radius: 25px;
    /* 固定在右下角 */
    position: sticky;

    bottom: 50px;
    left: 90%;
    cursor: pointer;
    padding:  0 10px;
}
.connect li{
    cursor:pointer;
}
#block{
    width:0 ;


    transition:width 0.5s ;
    /* Safari */
    -webkit-transition:width 0.5s ;
}
h2,h3,h4,h5{
    margin: 0 ;
    padding: 0 ;
    font-weight: normal
}
#hidden div{
    margin:auto;
}
#soft div{
    margin: 20px auto;
}
#hard div{
    margin: 20px auto;
}
#allProduct div{
    margin: 20px auto;
}
#service div{
    margin: 20px auto;
}
#softWareDownloadNav div{
    margin: 20px auto;
}
#driveDownloadNav div{
    margin: 20px auto;
}
#resource div{
    margin: 20px auto;
}
.accordion {

    cursor: pointer;
    text-align: left;
    border: none;
    outline: none;
    transition: 0.4s;

}

/* 为手风琴面板设计样式。 默认隐藏 */
.panel {


    max-height: 0;
    overflow: hidden;
    transition: max-height 0.2s ease-out;
    width: 90%;
    text-align:left;
    margin: auto;
}
.panel div{
    padding: 5px 0;
    width: 98%;
    margin: auto;
    font-size: 15px;
}
/* 设置 +、- 标志 */
.accordion:after {
    content: '\002B';  /* Unicode 字符 + 号 */
    color: #044123;
    font-weight: bold;
    float: right;
    margin-left: 5px;
}

.active:after {
    content: "\2212";  /* Unicode 字符 - 号 */
}


#smallnav{
    z-index: 2147483647;
}
#copyRight a{
    color: white;
}

#copyRight a:hover{
    color: #4f9bff;
}
#bignav h3{
    font-size: 22px;
}

.allproductcff{
    margin: 10px auto;
    font-size: 18px;
}
#product{
    font-size: 18px;
}
#service{
    font-size: 18px;
}
.allproduct{
    font-size: 18px;
}