.banner {
    margin: 0 auto;
    background: url(../images/pc_banner.jpg)center no-repeat;
    background-attachment: scroll;
    width: 100%;
    height: 544px;
    margin-bottom: 0px;
    position: relative;
}

.bg {
    background: url(../images/bg2.jpg) center no-repeat;
    background-attachment: scroll;
    margin: 0 auto;
    width: 100%;
    height: 3782px;
    margin-bottom: 0px;
    position: relative;

}

.bottom {
    background: url(../images/bg3.jpg) center no-repeat;
    background-attachment: scroll;
    margin: 0 auto;
    width: 100%;
    height: 404px;
    margin-bottom: 0px;
    position: relative;
}

.tittle {
    display: grid;
    text-align: left;

}

.tittle h1 {
    color: #f7453b;
    font-size: 24px;
    margin-top: 50px;
    display: inline-block;
    font-weight: bold;
}

.text {
    width: 922px;
    margin-left: auto;
    margin-right: auto;
}

.text p {

    font-size: 16px;
    line-height: 30px;
    color: #5b5b5b;
    text-indent: 2em;
    margin-bottom: 14px;
}


.btn {
    cursor: pointer;
    text-align: center;
    margin: 180px auto 100px auto;
    position: absolute;
    width: 100%;
}

.swiper {
    width: 750px;
    height: 200px;
}

.swiper-slide {
    text-align: center;
    font-size: 18px;
    background: transparent;
    display: flex;
    justify-content: center;
    align-items: center;
}

.swiper-slide img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 5px;
}

.div_swiper {
    width: 800px;
    height: 210px;
    display: flex;
    margin: 0 auto;
}