*{
    margin: 0 auto;
    padding: 0;
}
ul,li,a{
    text-decoration: none;
}
.sem_pop_box{
    position: fixed;
    width: 640px;
    height: 380px;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    padding: 15px 19px;
    border: 1px solid #ddd;
    border-radius: 8px;
    -webkit-transform: translate(-50%,-50%);
    -moz-transform: translate(-50%,-50%);
    -ms-transform: translate(-50%,-50%);
    -o-transform: translate(-50%,-50%);
    box-sizing: border-box;
    background-color: #fff;
    z-index:1000;
    display: none;
}
.sem_pop_box p{
    padding-bottom: 6px;
    font-size: 20px;
    color: #7f7f7f;
    font-weight: bolder;
}
.sem_pop_box .close{
    position: absolute;
    top: 0;
    right: 0;
    display: inline-block;
    padding: 5px 12px;
    border-top-right-radius: 8px;
    background-color: #8f8f8f;
    color: #fff;
}
.sem_pop_box ul{
    font-size: 0;
}
.sem_pop_box ul li{
    display: inline-block;
    font-size: 14px;
    width: 16.3%;
    margin: 20px auto;
}
.sem_pop_box ul li.current_software{
    display: none;
}
.sem_pop_box ul li a{
    display: block;
    width: 100%;
    text-align: center;
}
.sem_pop_box ul li a img{
    display: block;
    width: 60px;
    height: 60px;
    border-radius: 8px;
}
.sem_pop_box ul li a span{
    display: inline-block;
    width: 68px;
    height: 33px;
    color: #333;
    font-size: 14px;
    box-sizing: border-box;
    padding: 10px 0;
    overflow: hidden;
    white-space: nowrap;
    /*text-overflow: ellipsis;*/
    text-overflow: '';
}
.sem_pop_box ul li .download_btn{
    padding: 4px 8px;
    border: 1px solid green;
    box-sizing: border-box;
    width: 60%;
    text-align: center;
    border-radius: 4px;
    color: green;
}