.download-list {
    margin: 0 -20px;
}
.download-list .item {
    width: 33.33%;
    padding: 0 20px;
}
.download-list .box {
    max-width:360px;
    margin:0 auto 40px;
    position: relative;
    display: flex;
    align-items: center;
}
.download-list .box .cover{
    font-size: 0;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: 100%;
    z-index:30;
}
.download-list .pic {
    position: relative;
    overflow: hidden;
    border-radius: 20px;
    flex-basis: 140px;
}
.download-list .name {
    font-size: 18px;
    font-weight: bold;
    display: inline-block;
    max-height: 52px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: all .5s;
}
.download-list .box:hover .name {
    color: #59A599;
}
.download-list .box .txt{
    margin-left: 20px;
    flex-grow: 1;
    width: calc(100% - 160px);
}
.down{
    width: 143px;
    height: 28px;
    font-size: 15px;
    color: #59A599;
    box-sizing: border-box;
    border-radius: 30px;
    border: 2px solid #59A599;
    letter-spacing: 0;
    font-family: 'Work Sans', sans-serif;
    margin: 10px 0 0 0;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: all .5s;
}
.box:hover .down{
    color: #fff;
    background: #59A599;
}
.down::before{
    content: '';
    display: block;
    width: 12px;
    height: 15px;
    background: #59A599;
    position: absolute;
    left: 15px;
    top: 0;
    border-radius:0 0 10px 10px ;
    transition: all .5s;
    clip-path: polygon(60% 0, 60% 50%, 85% 50%, 50% 85%, 15% 50%, 39% 50%, 40% 0);
}
.box:hover .down::before{
    background: #fff;
    clip-path: polygon(60% 0, 60% 70%, 85% 70%, 50% 100%, 15% 70%, 40% 70%, 40% 0);
}
@media screen and (max-width: 1300px) {
    .download-list .item {
        width: 50%;
    }
}
@media screen and (max-width: 1000px) {
    .download-list .item {
        width: 50%;
    }
}
@media screen and (max-width: 689px) {
    .download-list .pic {
        max-width: 100px;
    }
    .txt{
        margin-left: 120px;
        top: 7%;
    }
}
@media screen and (max-width: 568px) {
    .download-list .box {
        margin:20px auto;
        max-width:100%;
    }
    .download-list .item {
        width: 100%;
    }
}