.grid-download{
    margin: 0 -15px;
}
.grid-download .item{
    margin-bottom: 20px;
    width: 33.333%;
    padding: 0 15px;
    float: left;
}
.grid-download .item:nth-child(3n+1){
    clear: left;
}
.grid-download .item .i-image img{
    width: 100%;
}
.grid-download .item .i-desc{
    padding: 15px 0;
    border-bottom: 2px solid #f5f5f5;
    position: relative;
}
.grid-download .item .i-desc:after{
    position: absolute;
    height: 2px;
    bottom: -2px;
    left: 0;
    right: 100%;
    content: '';
    background: #ffd200;
    -webkit-transition:all 0.5s ease;
    -moz-transition:all 0.5s ease;
    -o-transition:all 0.5s ease;
    transition:all 0.5s ease;
}
.grid-download .item:hover .i-desc:after{
    right: 0;
}
.grid-download .item .i-desc .i-title{
    font-size: 17px;
    line-height: 25px;
    color: #333333;
    margin-bottom: 10px;
}
.grid-download .item .i-desc .i-title a{
    font-size: 17px;
    line-height: 25px;
    font-weight: normal;
}
.grid-download .item .i-desc .i-link a{
    display: block;
    font-size: 15px;
    line-height: 25px;
    overflow: hidden;
    white-space: nowrap;
    -ms-text-overflow: ellipsis;
    text-overflow: ellipsis;
    color: #555555;
    padding: 5px 10px;
    background: #f4f4f4;
    -webkit-transition:all 0.5s ease;
    -moz-transition:all 0.5s ease;
    -o-transition:all 0.5s ease;
    transition:all 0.5s ease;
}
.grid-download .item .i-desc .i-link a:hover{
    background: #ffd200;
    color: #ffffff;
}
.grid-download .item .i-desc .i-link a i{
    font-size: 20px;
    line-height: 25px;
    padding-right: 10px;
    color: #0d2a8a;
    -webkit-transition:all 0.5s ease;
    -moz-transition:all 0.5s ease;
    -o-transition:all 0.5s ease;
    transition:all 0.5s ease;
}
.grid-download .item .i-desc .i-link .ileft{
    float: left;
    width: 49%;
}
.grid-download .item .i-desc .i-link .iright{
    float: right;
    width: 49%;
}
.grid-download .item .i-desc .i-link a:hover i{
    color: #ffffff;
}
@media screen and  (max-width: 1024px){
    .grid-download{
        margin: 0 -5px;
    }
    .grid-download .item{
        padding: 0 5px;
    }
}
@media screen and  (max-width: 768px){
    .grid-download .item .i-desc .i-link .ileft{
        width: 100%;
        margin-bottom: 10px;
    }
    .grid-download .item .i-desc .i-link .iright{
        width: 100%;
    }
}
@media screen and  (max-width: 640px){
    .grid-download .item{
        width: 50%;
    }
    .grid-download .item:nth-child(n){
        clear: none;
    }
    .grid-download .item:nth-child(2n+1){
        clear: left;
    }
}
@media screen and  (max-width: 479px){
    .grid-download .item{
        width: 100%;
    }
}