.download-list {
    max-width: 1360px;
    margin: 0 auto;
}

.download-list .item {
    width: 25%;
    padding: 0 7px;
}

.download-list .item:nth-child(4n+1) {
    clear: left;
}

.download-list .box {
    max-width: 250px;
    margin: 0 auto 40px;
    text-align: center;
    position: relative;
}

.download-list .pic {
    margin-bottom: 10px;
    overflow: hidden;
    border: 1px solid #c7c7c7;
}

.download-list .name {
    color: #2a2a2a;
    font-size: 16px;
    line-height: 32px;
    white-space: nowrap;
    -ms-text-overflow: ellipsis;
    text-overflow: ellipsis;
    overflow: hidden;
    height: 32px;
    border: 1px solid #ddd;
    border-width: 0 0 1px;
    margin: 0 auto;
}

.download-list .box:hover .name {
    color: #ff4400;
}

.download-list .name:before {
    content: '';
    width: 0;
    height: 1px;
    background: #ff4400;
    position: absolute;
    display: block;
    transition: all .3s ease;
    left: 0;
    bottom: 0;
}

.download-list .box:hover .name:before {
    width: 100%;
}

.download-list .box .pic img {
    width: 100%;
    background-position: center center;
    background-repeat: no-repeat;
    background-size: contain;
    transition-delay: 0s;
    transition-duration: 4s;
    transition-property: -webkit-transform;
    transition-property: transform;
    transition-property: transform, -webkit-transform;
    transition-timing-function: cubic-bezier(0.075, 0.82, 0.165, 1);
}

.download-list .box:hover .pic img {
    -webkit-transform: scale(1.1);
    transform: scale(1.1);
}

@media screen and (max-width: 1000px) {
    .download-list .item {
        width: 33.33%;
    }

    .download-list .item:nth-child(4n+1) {
        clear: none;
    }

    .download-list .item:nth-child(3n+1) {
        clear: left;
    }
}

@media screen and (max-width: 600px) {
    .download-list {
        max-width: 600px;
    }

    .download-list .item {
        width: 50%;
    }

    .download-list .item:nth-child(3n+1) {
        clear: none;
    }

    .download-list .item:nth-child(2n+1) {
        clear: left;
    }
}

@media screen and (max-width: 560px) {
    .download-list {
        margin: 0 -7px;
    }

    .download-list .box {
        margin-bottom: 25px;
    }
}

@media screen and (max-width: 400px) {
    .download-list .item {
        width: 100%;
    }
}