.download_main{
    flex-wrap: wrap;
}
.download_main_div {
    width: calc((100% - 40px) / 3);
    margin-right: 20px;
    margin-bottom: 20px;
    background: #FFFFFF;
    position: relative;
    overflow: hidden;
    padding: 30px 30px 25px;
    border: 1px solid #E5E5E5;
}

.download_main .download_main_div:nth-child(3n) {
    margin-right: 0;
}

.download_title {
    font-family: Syne-Bold;
    font-weight: bold;
    font-size: 22px;
    color: #333333;
    line-height: 1.5em;
    height: 1.5em;
    overflow: hidden;
}

.download_desc {
    font-family: ArialMT;
    font-weight: 400;
    font-size: 16px;
    color: #666666;
    line-height: 1.5em;
    height: 6em;
    overflow: hidden;
    margin: 20px 0 60px;
}

.download_icon_box {
    position: relative;
    z-index: 1;
    justify-content: space-between;
}

.download_icon_down {
    display: block;
    width: 25px;
    height: 27px;
    background: url('img/down.webp') no-repeat;
    background-size: 100% 100%;
    margin-right: 35px;
}

.download_icon_down:hover {
    background: url('img/down2.webp') no-repeat;
    background-size: 100% 100%;
}

.download_icon_see {
    display: block;
    width: 30px;
    height: 24px;
    background: url('img/see.webp') no-repeat;
    background-size: 100% 100%;
}

.download_icon_see:hover {
    background: url('img/see2.webp') no-repeat;
    background-size: 100% 100%;
}

.download_icon {
    width: 51px;
    height: 51px;
    background: url('img/pdf.webp') no-repeat;
    background-size: 100% 100%;
}

.down_bac {
    width: 220px;
    height: 220px;
    background: #E5E5E5;
    border-radius: 50%;
    position: absolute;
    right: -13%;
    bottom: -33%;
}

.download_main_div:hover .down_bac {
    background: #171717;
}

@media only screen and (max-width: 950px) {
    .download_main_div{
        width: 100%;
        margin-right: 0;
    }
}