.download-box{
    width: 100%;
    display: block;
    position: relative;
    font-size: 0;
    margin-top: 80px;
}
.download-info-box{
    width: 1000px;
    max-width: 100%;
    display: block;
    position: relative;
    box-sizing: border-box;
    margin: 0 auto;
    z-index: 2;
    padding-top: 80px;
    padding-bottom: 30px;
}
.download-info{
    width: 240px;
    display: inline-block;
    margin-left: 13.333px;
    margin-bottom: 20px;
    cursor: pointer;
}
.download-info:nth-child(4n + 1){
    margin-left: 0;
}
.download-info-line-box{
    width: 100%;
    position: relative;
    box-sizing: border-box;
}
.download-info-img-box{
    display: block;
    width: 100%;
    height: 240px;
    box-sizing: border-box;
    padding: 10px;
    overflow: hidden;
    border: 1px solid #d1d1d1;
    position: relative;
}
.download-info-img-bc{
    width: 100%;
    height: 100%;
    display: block;
    position: relative;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
}
.download-info-text{
    display: block;
    font-size: 14px;
    letter-spacing: 6px;
    font-weight: lighter;
    text-align: center;
    margin-top: 20px;
    color: #000;
    transition: all .3s linear;
    width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.download-info-img-mask{
    width: 100%;
    height: 100%;
    background-color: rgba(238,27,45,0.8);
    display:flex;
    display: -webkit-flex;
    align-items: center;
    -webkit-align-items: center;
    justify-content: center;
    -webkit-justify-content: center;
    flex-direction:column;
    opacity: 0;
    transition: all .3s linear;
}
.download-info-img-icon{
    font-size: 28px;
    color: #fff;
}
.download-info-img-text{
    font-size: 16px;
    color: #fff;
    letter-spacing: 1px;
}

.download-info-line-t{
    top: 0;
    left: 0;
    width: 50px;
    height: 1px;
}
.download-info-line-l{
    top: 0;
    left: 0;
    width: 1px;
    height: 50px;
}
.download-info-line-b{
    bottom: 0;
    right: 0;
    width: 50px;
    height: 1px;
}
.download-info-line-r{
    bottom: 0;
    right: 0;
    width: 1px;
    height: 50px;
}
.download-info-line-t,
.download-info-line-l,
.download-info-line-b,
.download-info-line-r{
    position: absolute;
    display: block;
    background-color: #d3202f;
    transition: all .3s linear;
}


/*<------------hover------------>*/
.download-info:hover .download-info-img-mask{
    opacity: 1;
}
.download-info:hover .download-info-text{
    color: #d3202f;
}

@media only screen and (max-width: 1000px){
    .download-box{
        margin-top: 62px;
    }
    .download-info-box{
        width: 800px;
        padding-top: 60px;
        padding-bottom: 35px;
    }
    .download-info{
        width: 180px;
        margin-left: 26.6667px;
    }
    .download-info-img-box{
        height: 180px;
    }
}
@media only screen and (max-width: 800px){
    .download-info-box{
        width: 600px;
        padding-top: 40px;
        padding-bottom: 10px;
    }
    .download-info{
        width: 190px;
        margin-bottom: 20px;
    }
    .download-info-img-box{
        height: 190px;
    }
    .download-info:nth-child(n) {
        margin-left: 15px;
    }
    .download-info:nth-child(3n + 1) {
        margin-left: 0;
    }
    .download-info-line-t,
    .download-info-line-b{
        width: 40px;
    }
    .download-info-line-l,
    .download-info-line-r{
        height: 40px;
    }
}
@media only screen and (max-width: 600px){
    .download-box{
        margin-top: 42px;
    }
    .download-info-box{
        width: 400px;
        padding-top: 20px;
        padding-bottom: 0;
    }
    .download-info{
        width: 190px;
        margin-left: 20px;
        margin-bottom: 20px;
    }
    .download-info-img-box{
        height: 190px;
    }
    .download-info:nth-child(3n + 1) {
        margin-left: 20px;
    }
    .download-info:nth-child(2n + 1) {
        margin-left: 0;
    }
    .download-info-line-t,
    .download-info-line-b{
        width: 30px;
    }
    .download-info-line-l,
    .download-info-line-r{
        height: 30px;
    }
}
@media only screen and (max-width: 400px){
    .download-info-box{
        width: 300px;
        padding-top: 10px;
        padding-bottom: 0;
    }
    .download-info{
        width: 145px;
        margin-left: 10px;
        margin-bottom: 10px;
    }
    .download-info-img-box{
        height: 145px;
    }
    .download-info:nth-child(3n + 1) {
        margin-left: 10px;
    }
    .download-info:nth-child(2n + 1) {
        margin-left: 0;
    }
    .download-info-text{
        font-size: 12px;
        letter-spacing: 4px;
        margin-top: 10px;
    }
    .download-info-line-t,
    .download-info-line-b{
        width: 20px;
    }
    .download-info-line-l,
    .download-info-line-r{
        height: 20px;
    }
}




/*animation*/
/*<-------------動畫------------->*/

@media only screen and (min-width: 1001px){
    .download-info{
        opacity: 0;
    }
    .download-info.active{
        animation: animation_fade 1s ease both;
    }
}