.mask{
    height: 400px;
}
.right-button {
    display: flex;
}

.item-product {
    display: none;
}

.navbar-width {
    background-color: rgba(45, 44, 44, 0.8);
}

.nav-item,.nav-item-index{
    height: 45px;
}


.nav>li {
    max-width: 112px;
}

.nav>li>a {
    padding: 14px 0 15px 10px;
}

.item-list {
    top: 150px;
    left: 16%;
}
.section-1 .slogan-title{
    top: 14%;
}
.section-1 .slogan {
    top: 20%;
}

.navbar-dark {
    background-color: rgb(45, 44, 44);
    background-color: rgba(45, 44, 44, 0.8);
    box-shadow: 0 2px 5px #000;
}
.footer-8 .footer-bottom {
    padding: 12px 0;
}

.footer-8 .footer-bottom div {
    width: 320px;
    margin: 0 auto;
}
.footer-three .row div:last-child{
    margin-bottom: 15px;
}
.footer-8 .weixin-title {
    margin: 0 auto !important;
}
.footer-8 .weixin-title {
    margin: 0 auto !important;
}

.product-work .item {
    margin-left: 33%
}