body{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
.img100{
    display: block;
    width: 100%;
}
p{
    margin: 0;
}
a{
    text-decoration: none;
}
.banner_part{
    position: relative;
}
.swiper-button-next, .swiper-button-prev{
    color: #ffffff !important;
    z-index: 99999;
}
.swiper-button-prev{
    left: 280px;
}
.swiper-button-next{
    right: 280px;
}

@media screen and (max-width: 1200px) {
    .div1200,
    .footer_1,
    .footer_2,
    .footer3,
    .phone_part{
        width: 100%;
        padding-left: 15px;
        padding-right: 15px;
        box-sizing: border-box;
    }
    .nav{
        left: 15px;
        width: calc(100% - 30px);
    }
    .nav_left{
        width: 200px;
    }
    .nav_items>a{
        font-size: 12px;
    }
    .nav_items>a:not(:last-child){
        margin-right: 10px;
    }
    .swiper-button-prev{
        left: 10px;
    }
    .swiper-button-next{
        right: 10px;
    }
}

@media screen and (max-width: 768px) {
    .div1200,
    .footer_1,
    .footer_2,
    .footer3,
    .phone_part{
        padding-left: 10px;
        padding-right: 10px;
    }
    .nav{
        left: 10px;
        width: calc(100% - 20px);
        top: 10px;
    }
    .nav_left{
        width: 120px;
    }
    .nav_right>div:first-child{
        display: none;
    }
    .nav_items{
        flex-wrap: wrap;
        justify-content: flex-end;
    }
    .nav_items>a{
        font-size: 11px;
        padding: 3px 5px;
    }
    .nav_items>a:not(:last-child){
        margin-right: 5px;
        margin-bottom: 5px;
    }
    .footer_1>div{
        flex-wrap: wrap;
    }
    .footer_1>div>p{
        width: 50%;
        font-size: 12px;
        margin-bottom: 5px;
    }
    .footer_2{
        flex-wrap: wrap;
    }
    .footer2_item1{
        width: 50%;
        margin-bottom: 20px;
    }
    .footer2_item2{
        width: 100%;
        justify-content: center;
    }
    .footer3>div:first-child{
        flex-wrap: wrap;
    }
    .footer3>div:first-child>a{
        font-size: 11px;
        margin-right: 5px;
        margin-bottom: 5px;
    }
    .phone_part{
        flex-wrap: wrap;
    }
    .phone_item{
        width: 100%;
        padding: 15px 0;
        border-right: none !important;
        border-bottom: 1px solid #EDEDED;
    }
    .phone_item:last-child{
        border-bottom: none;
    }
}