.header .navbar_nav li.dropdown:nth-child(1) a {
    font-weight: bold;
    color: var(--color);
}

.section {
    overflow: hidden;
    position: absolute;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
}

.IndexBox {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
    padding-top: 75px;
    padding-bottom: 75px;
}

.section1 {
    z-index: 8;
}

.section1 .IndexBox {
    padding: 0;
}

.section2 {
    z-index: 7;
}

.section3 {
    z-index: 6;
}

.section4 {
    z-index: 5;
}

.section5 {
    z-index: 4;
}

.section6 {
    z-index: 3;
}


@media (max-height: 700px) {
    .IndexBox {
        padding-top: 45px;
        padding-bottom: 45px;
    }
}

/* 宽 */
@media (max-width: 1440px) {
    .IndexBox {
        padding-top: 30px;
        padding-bottom: 30px;
    }
}

@media (max-width: 1190px) {
    .section {
        overflow: hidden;
        position: relative;
        left: auto;
        top: auto;
        width: 100vw;
        height: auto;
        z-index: 1 !important;
    }

    .IndexBox {
        padding: 60px 5vw;
    }
}