.index_contact {
    margin-top: 5%;
}

.download_main {
    flex-wrap: wrap;
    margin-top: 30px;
}

.download_div {
    width: calc((100% - 50px) / 3);
    margin-right: 25px;
    padding: 25px;
    margin-bottom: 25px;
    border: 1px solid #D9D9D9;
}

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

.pdf_icon {
    width: 88px;
}

.pdf_title {
    font-family: Arial-Regular, Arial;
    font-weight: 400;
    font-size: 16px;
    color: #333333;
    line-height: 1.8em;
    height: 3.6em;
    overflow: hidden;
    margin-top: 20px;
}

.pdf_btns {
    margin-top: 20px;
}

.pdf_btns .down {
    width: 28px;
    height: 28px;
    background: url('img/down2.png') no-repeat;
    background-size: 100% 100%;
    display: block;
    margin-right: 25px;
}

.pdf_btns .see {
    width: 28px;
    height: 28px;
    background: url('img/see.png') no-repeat;
    background-size: 100% 100%;
    display: block;
}

.download_div:hover {
    box-shadow: 0px 12px 11px 0px rgba(0, 0, 0, 0.08);
}

.pdf_btns a:hover{
    transform: rotate(-360deg);
}

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