html, body {
    position: relative;
    height: 100%;
}
*{
    margin: 0;
    padding: 0;
}
.logo{
    width: 150px;
}

.nav-link{
    color: #8b95a6;
    font-weight: bold;
}

.active{
    color: #57b046;
}
.swiper{
    overflow: hidden;
    height: 600px;
    position: relative;
}

.banner .swiper-container {
    width: 100%;
    height: 100%;
    margin-left: auto;
    margin-right: auto;
}
.banner .swiper-slide {
    text-align: center;
    font-size: 18px;
    background: #fff;
    display: -webkit-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    -webkit-align-items: center;
    align-items: center;
    position: relative;
}
.banner .swiper-slide img{
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.swiper-slide .introduce {
    position: absolute;
    z-index: 2;
    text-align: left;
}
.swiper-slide .introduce h3{
    color: #fff;
    font-weight: 600;
    font-size: 2.5rem;
    color: rgb(255, 255, 255);
    transform: matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    text-align: left;
    line-height: 1.6;
}

.more{
    background-color: rgb(87, 176, 70);
    cursor: pointer;
    box-sizing: border-box;
    visibility: visible;
    text-align: inherit;
    line-height: 20px;
    font-weight: 700;
    font-size: 14px;
    border-radius: 30px;
    padding: 15px 35px;
    color: rgb(255, 255, 255);
    transform-origin: 50% 50% 0px;
    transform: matrix3d(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
    display: inline-block;
    margin-top: 25px;
}

main{
    background: rgb(244,247,252);
}

main>section{
    padding: 4em 0;
}

#about img{
    width: 100%;
    height: 560px;
    object-fit: cover;
}
.aboutintorduce{
    background: #fff;
    padding:60px 10% 20px
}
#about .row>div:nth-child(1){
    padding: 0 !important;
}

.aboutintorduce h3{
    color: #052154;
    font-size: 2.5rem;
    line-height: 50px;
    font-weight: 600;
    margin-bottom: 25px;
}
.aboutintorduce p{
    color:#8d939d;
    margin-bottom: 15px;
}
.more1{
    display: inline-block;
    padding: 10px 20px;
    background-color: #003daf;
    color: #ffffff;
    border-radius: 5px;
    box-shadow: inset 0 0 0 1px rgb(0 0 0 / 3%), inset 0px 4px 3px -2px rgb(0 0 0 / 7%);
    margin-top: 30px;
}

main a:hover{
    text-decoration: none;
    color: #fff;
}

#programme{
    background: linear-gradient(to top,rgba(0,0,0,.5),rgba(0,0,0,.5)),url(../images/1.jpg) no-repeat fixed center / cover;
    color: #fff;
    text-align: center;
}
#programme p{
    color: #fff;
}
.titwrap{
    text-align: center;
}
.titwrap h3{
    font-size: 2.0rem;
    margin-bottom: 20px;
}

.titwrap p{
    color:#f0f0f0
}

ul,li{
    list-style: none;
}

.pglist{
    display: flex;
    justify-content: space-evenly;
    align-items: center;
    text-align: center;
    margin-top: 40px;
}
.pglist img{
    width: 60px;
    margin-bottom: 20px;
}

#product{
    background: rgb(244,247,252);
}

#product p{
    color: #333;
}
@media (min-width:1000px) {
    #product .productlist p{
        min-height: 180px;
    }
}
.productlist{
    margin-top: 4em;
    display: flex;
}
.productlist .pitem{
    background-color: #ffffff;
    box-shadow: 0 0px 20px rgb(0 0 0 / 5%);
    border-radius: 10px;
    border: 1px solid #f2f2f2;
    /* min-height: 525px; */
    margin-bottom: 30px;
}
.productlist .pitem .r{
    padding: 30px 40px;
}

.pitem .l {
    text-align: center;
}
.pitem .l img{
    height: 130px;
    width: auto;
    margin-top: 20px;
}

.productlist .r h4{
    margin-bottom: 20px;
    min-height: 60px;
}
.productlist .r p{
    line-height: 1.6;
    font-size: 14px;
}

#contact{
    background: #fff;
}

#contact ul li{
    position: relative;
    line-height: 1.6;
    color: #8d939d;
    margin-bottom: 7px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
}
#contact h5{
    color:#052154;
    font-size:20px;
    font-weight: bold;
    margin-bottom: 15px;
}

#contact a,p{
    color:#8d939d
}

#contact ul li img{
    height: 17px;
    width: auto;
    object-fit: contain;
    margin-left: 15px;
    margin-right: 5px;
}

.text-center{
    background: #f1f4f9;
}
.text-center p{
    margin: 0;
    padding: 10px 0;
    text-align: left;
}
.text-center .beian{
    text-align: right;
}

.text-center a{
    color: #8d939d;
}

@media (max-width: 768px){
    .text-center .beian{
        text-align: left;
    }
    #about img{
        height: 300px;
    }
    .swiper-slide .introduce h3{
        font-size: 1.75rem;
    }
    .nav-link{
        text-align: center;
    }
    #contact .row>div:nth-child(3){
        display: none;
    }
}
.navbar-toggler{
    border: 1px solid #ddd;
}
.navbtn{
    width: 25px;
    height: auto;
}

#chemistry{
    background: #fff;
    color: #888;
    border-bottom: 1px solid #eee;
}
#chemistry h3 {
    color: #333;
}


@media (min-width:1000px){
    #chemistry .titwrap p{
        width: 80%;
        margin: 0 auto;
    }
}
#chemistry .titwrap p{
    color: #8d939d; 
    margin-bottom: 30px;
 }
.imgwrap{
    width: 100%;
    height: 215px;
    overflow: hidden;
}

.imgwrap img{
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all .3s;
}

.hxlist>div:hover .imgwrap img{
    transform: scale(1.5);
}

.hxlist{
    color: #333;
}
.hxlist p{
    font-size: 14px;
}