.download-menu-list-box{
    text-align: center;
    font-size: 0;
}
.download-menu-list{
  
    display: inline-block;
    vertical-align: top;
    position: relative;
    box-sizing: border-box;
    position: relative;
    text-align: center;
    height: 40px;
    line-height: 38px;
    margin:0 20px;
}
.download-menu-list:after{
    content: '';
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background-color: #ee1b2d;
    transform: scale(0,1);
    transition: all .5s ease;

}
.download-menu-list .sum_index_news_title{
    font-size: 14px;
    letter-spacing: 4px;
      padding: 0 20px;
      transition: all .5s ease;
}
.download-menu-list .line-top1{
    width: 15px;
}
.download-menu-list .line-left1{
    height: 15px;
}
.download-list-box{
    width: 1000px;
    max-width: 100%;
    display: block;
    margin: 0 auto;
    margin-top: 50px;
    padding-bottom: 80px;
    font-size: 0;
}
.download-list{
    width: 300px;
    max-width: 100%;
    display: inline-block;
    margin-bottom: 46px;
    vertical-align: top;
}
.download-list:nth-child(3n+2){
    margin: 0 46px;

}
.download-list-img-block{
    width: 100%;
    height: 300px;
    display: block;
    position: relative;
    padding: 10px;
    box-sizing: border-box;
}
.download-list-img{
    width: 100%;
    height: 100%;
    display: block;
    position: relative;
}
.download-mask-box{
    width: 100%;
    height: 100%;
    position: absolute;
    display:         flex;
    display: -webkit-flex;
          align-items: center;
    -webkit-align-items: center;
          justify-content: center;
    -webkit-justify-content: center; 
    flex-direction:column;
    top: 0;
    left: 0;
    background-color: rgba(238,27,45,0.8);
    opacity: 0;
    transition: all .5s ease;
}
.download-mask-box i{
    font-size: 28px;
    display: block;
    padding-bottom: 10px;
    color: #FFF;
}
.download-mask-box p{
    font-size: 16px;
    color: #FFF;
}
.download-border-box{
    pointer-events: none;
}
.download-border-box .line-top1,
.download-border-box .line-top2,
.download-border-box .line-bottom1,
.download-border-box .line-bottom2{
    width: 30px;
}
.download-border-box .line-left1,
.download-border-box .line-left2,
.download-border-box .line-right1,
.download-border-box .line-right2{
    height: 30px;
}
.download-border-p{
    margin-top: 20px;
    padding: 0 10px;
    box-sizing: border-box;
    width: 100%;
    display: block;
    font-size: 14px;
    text-align: center;
}