.download-list {
    margin: 0 -6px;
}

.download-list .item {
    width: 25%;
    margin-bottom: 25px;
    padding: 0 6px;
}

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

.download-list .box {
    max-width: 352px;
    margin: 0 auto 12px;
}

.download-list .pic {
    position: relative;
    overflow: hidden;
}

.download-list .pic a:before {
    content: '';
    display: block;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.40);
    opacity: 0;
    -webkit-transition: all 0.3s;
    transition: all 0.3s;
}

.no-svg .download-list .pic a:before {
    background-image: url('../../images/common/download/hover.png');
}

.download-list .box:hover .pic a:before {
    opacity: 1;
}

.download-list .pic a:after {
    content: '';
    display: block;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 0 10px 10px 10px;
    border-color: transparent transparent #282835 transparent;
    position: absolute;
    bottom: 0;
    left: 50%;
    margin-left: -10px;
}

.download-list .name {
    background: #fdfdfd;
    color: #000000;
    display: block;
    position: relative;
    height: 60px;
    padding: 0 60px 0 16px;
    position: relative;
}
.download-list .name a:first-child{
    font-size: 16px;
    line-height: 60px;
    white-space: nowrap;
    -ms-text-overflow: ellipsis;
    text-overflow: ellipsis;
    overflow: hidden;

}
.download-list .box:hover .name a:first-child{
    color: #86a7ea;
}

.download-list .name a:nth-child(2) {
    width: 40px;
    height: 40px;
    line-height: 40px;
    background: #2758cf;
    color: #fff;
    font-size: 21px;
    text-align: center;
    border-radius: 50%;
    position: absolute;
    right: 12px;
    top: 50%;
    margin-top: -20px;
}

.download-list .box:hover .name a:nth-child(2) {
    background: #86a7ea;
    -webkit-animation-duration: 0.6s;
    animation-duration: 0.6s;
    -webkit-animation-fill-mode: both;
    animation-fill-mode: both;
    -webkit-backface-visibility: visible;
    backface-visibility: visible;
    -webkit-animation-name: flipInY;
    animation-name: flipInY;
}

@-webkit-keyframes flipInY {
    from {
        -webkit-transform: perspective(400px) rotate3d(0, 1, 0, 90deg);
        transform: perspective(400px) rotate3d(0, 1, 0, 90deg);
        -webkit-animation-timing-function: ease-in;
        animation-timing-function: ease-in;
        opacity: 0;
    }

    40% {
        -webkit-transform: perspective(400px) rotate3d(0, 1, 0, -20deg);
        transform: perspective(400px) rotate3d(0, 1, 0, -20deg);
        -webkit-animation-timing-function: ease-in;
        animation-timing-function: ease-in;
    }

    60% {
        -webkit-transform: perspective(400px) rotate3d(0, 1, 0, 10deg);
        transform: perspective(400px) rotate3d(0, 1, 0, 10deg);
        opacity: 1;
    }

    80% {
        -webkit-transform: perspective(400px) rotate3d(0, 1, 0, -5deg);
        transform: perspective(400px) rotate3d(0, 1, 0, -5deg);
    }

    to {
        -webkit-transform: perspective(400px);
        transform: perspective(400px);
    }
}

@keyframes flipInY {
    from {
        -webkit-transform: perspective(400px) rotate3d(0, 1, 0, 90deg);
        transform: perspective(400px) rotate3d(0, 1, 0, 90deg);
        -webkit-animation-timing-function: ease-in;
        animation-timing-function: ease-in;
        opacity: 0;
    }

    40% {
        -webkit-transform: perspective(400px) rotate3d(0, 1, 0, -20deg);
        transform: perspective(400px) rotate3d(0, 1, 0, -20deg);
        -webkit-animation-timing-function: ease-in;
        animation-timing-function: ease-in;
    }

    60% {
        -webkit-transform: perspective(400px) rotate3d(0, 1, 0, 10deg);
        transform: perspective(400px) rotate3d(0, 1, 0, 10deg);
        opacity: 1;
    }

    80% {
        -webkit-transform: perspective(400px) rotate3d(0, 1, 0, -5deg);
        transform: perspective(400px) rotate3d(0, 1, 0, -5deg);
    }

    to {
        -webkit-transform: perspective(400px);
        transform: perspective(400px);
    }
}

.content-top {
    display: none;
}

@media screen and (max-width: 1200px) {
    .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: 900px) {
    .download-list .item {
        width: 50%;
        margin-bottom: 10px;
    }
    .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 .item {
        width: 100%;
    }
}