.index_main
{
    background: #f7f7f7;
}
.index_main .section1
{
    position: relative;
}
.index_main .section1 .index_banner .item
{
    background-size: cover;
    -webkit-background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    height: 450px;
    position: relative;
}
.index_main .section1 .index_banner .items
{
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
}
.index_main .section1 .index_banner .item .inner .block_txt
{
    position: absolute;
    top: 40%;
    left: 20%;
    width: 40%;
}
.index_main .section1 .index_banner .item .inner .block_txt h2
{
    color: #fff;
    font-size: 28px;
    padding: 0;
    margin-top: 0;
    font-weight: 600;
}
.index_main .section1 .index_banner .item .inner .block_txt h4
{
    color: #fff;
    display: inline-block;
    font-size: 20px;
}
.index_main .section1 .index_banner .item .inner .block_txt a:hover
{
    cursor: pointer;
}
.index_main .section1 .slick_txt
{
    width: 10%;
    height: 100%;
    background-color: transparent;
    transition: all 500ms ease;
    -webkit-transition: all 500ms ease;
    background-repeat: no-repeat;
    position: absolute;
    top: 0;
    font-size: 0;
    outline: none;
    border: 0;
}
.index_main .section1 .left
{
    left: 0;
}
.index_main .section1 .right
{
    right: 0;
}
.index_main .section1 .slick_txt:hover .slick_arrow
{
    opacity: 1;
    visibility: visible;
}
.index_main .section1 .slick_txt .slick_arrow
{
    width: 20px;
    height: 36px;
    background-repeat: no-repeat;
    background-position: center;
    margin-top: -18px;
    position: absolute;
    top: 50%;
    cursor: pointer;
    transition: all 500ms ease;
    -webkit-transition: all 500ms ease;
    opacity: 0;
    visibility: hidden;
}
.index_main .section1 .slick_txt .prev
{
    background-image: url(../image/ban_prev.png);
    left: 60px;
}
.index_main .section1 .slick_txt .next
{
    background-image: url(../image/ban_next.png);
    right: 60px;
}
.index_main .section1 .slick_txt .prev:hover
{
    background-image: url(../image/ban_prev_hover.png);
}
.index_main .section1 .slick_txt .next:hover
{
    background-image: url(../image/ban_next_hover.png);
}
.index_main .section1 .number
{
    position: absolute;
    bottom: 5%;
    left: 50%;
    padding-bottom: 5px;
    border-bottom: 1px solid rgba(255,255,255,.2);
    display: table;
    padding: 0 20px;
    width: auto;
    text-align: center;
    transform: translateX(-50%);
    -webkit-transform: translateX(-50%);
}
.index_main .section1 .number span
{
    font-size: 14px;
    color: #fff;
    margin-right: 100px;
    display: inline-block;
    cursor: pointer;
    position: relative;
    transition: all 500ms ease;
    -webkit-transition: all 500ms ease;
}
.index_main .section1 .number span:last-child
{
    margin-right: 0;
}
.index_main .section1 .number span:after
{
    content: "";
    display: inline-block;
    width: 0;
    height: 2px;
    background: #fff;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    -webkit-transform: translateX(-50%);
    bottom: -20px;
    opacity: 0;
    visibility: hidden;
    transition: all 500ms ease;
    -webkit-transition: all 500ms ease;
}
.index_main .section1 .number span.active:after
{
    width: 100%;
    opacity: 1;
    visibility: visible;
}
.index_main .section2
{
    background: #f5f5f5;
}
.index_main .section2 h3
{
    text-align: center;
}
.index_main .section3
{
    width: 100%;
    height: 100%;
    background: url(/src/img/3.jpg) no-repeat;
    background-size: 100% 100%;
}
.index_main .section3 h3
{
    text-align: center;
}
.index_main .section4
{
    background: #f5f5f5;
}
.index_main .section4 h3
{
    text-align: center;
}
@media only screen and (max-width: 1600px)
{
    .index_main .section1 .index_banner .item .inner .block_txt h4
    {
        font-size: 18px;
    }
    .index_main .section1 .index_banner .item .inner .block_txt h2
    {
        font-size: 25px;
    }
    .index_main .section1 .index_banner .item .inner .block_txt h3
    {
        font-size: 20px;
    }
}
@media only screen and (max-width: 1440px)
{
    .index_main .section1 .index_banner .item .inner .block_txt h4
    {
        font-size: 18px;
    }
    .index_main .section1 .index_banner .item .inner .block_txt h2
    {
        font-size: 22px;
    }
    .index_main .section1 .index_banner .item .inner .block_txt h3
    {
        font-size: 18px;
        margin-top: 5px;
    }
}
@media only screen and (max-width: 1366px)
{
    .index_main .section1 .index_banner .item .inner .block_txt h4
    {
        font-size: 18px;
    }
    .index_main .section1 .index_banner .item .inner .block_txt h2
    {
        font-size: 22px;
    }
    .index_main .section1 .index_banner .item .inner .block_txt h3
    {
        font-size: 16px;
    }
    .index_main .section1 .index_banner .slick-arrow
    {
        background-size: auto 30px;
    }
}
@media only screen and (max-width: 1199px)
{
    .index_main .section1 .index_banner .item
    {
        height: 300px;
    }
    .index_main .section1 .index_banner .item .inner .block_txt h4
    {
        font-size: 18px;
    }
    .index_main .section1 .index_banner .item .inner .block_txt h2
    {
        font-size: 22px;
    }
    .index_main .section1 .index_banner .item .inner .block_txt h3
    {
        font-size: 14px;
    }
    .index_main .section1 .index_banner .item .inner .block_txt
    {
        width: 70%;
    }
}
@media only screen and (max-width: 992px)
{
    .index_main .section1 .index_banner .item
    {
        height: 300px;
    }
    .index_main .section1 .index_banner .item .inner .block_txt
    {
        left: 0;
        right: 0;
        margin: 0 auto;
        padding: 0 20px;
        top: 30%;
    }
    .index_main .section1 .index_banner .slick-arrow
    {
        display: none!important;
    }
    .index_main .section1 .index_banner .slick-dots
    {
        position: absolute;
        bottom: 12px;
    }
    .index_main .section1 .index_banner .slick-dots li
    {
        width: 12px;
        height: 12px;
        border-radius: 50%;
        border: 2px solid #fff;
    }
    .index_main .section1 .index_banner .slick-dots li button
    {
        display: none;
    }
    .index_main .section1 .index_banner .slick-dots li.slick-active
    {
        background: #fff;
    }
    .index_main .section1 .number
    {
        bottom: 12%;
        display: none;
    }
    .index_main .section1 .number span
    {
        margin-right: 22px;
    }
    .index_main .section1 .number span:after
    {
        bottom: -14px;
    }
    .index_main .section1 .index_banner .item .inner .block_txt
    {
        width: 90%;
    }
}
@media only screen and (max-width: 767px)
{
    .index_main .section1 .index_banner .item
    {
        height: 220px;
    }
    .index_main .section1 .index_banner .item .inner .block_txt h4
    {
        font-size: 12px;
    }
    .index_main .section1 .index_banner .item .inner .block_txt h2
    {
        font-size: 18px;
    }
}