.download_nav {
    width: 950px;
    display: flex;
    justify-content: space-between;
    position: relative;
    top: 135px;
    left: 330px;
}

.left {
    width: 330px;
    margin-top: 30px;
}

.left img {
    width: 305px;
}

.title {
    width: 560px;
}

.title_msg {
    width: 160px;
    height: 60px;
    font-size: 26px;
    margin: 20px auto;
}


.pic {
    width: 1556px;
    height: 630px;
    position: relative;
    display: flex;
    justify-content: space-between;
}

.pic img {
    width: 490px;
}

.pic-01 {
    top: 75px;
    left: 174px;
}

.pic-02 {
    top: 44px;
    left: 174px;
}

.pic-03 {
    top: 42px;
    left: 174px;
}