html,body {
    padding: 0;
    margin: 0;
    min-height: 100vh;
}
.top_main {
    height: 60px;
    display: flex;
    align-items: center;
    position: relative;
}
.top_logo {
    flex: 1;
    height: 50px;
    padding: 5px;
    overflow: hidden;
}
.logo {
    display: block;
    height: 100%;
    width: auto;
}
.top_nav_img {
    margin: 0 5px;
    border: 1px solid #999;
    height: 40px;
    box-sizing: border-box;
    padding: 0 10px;
    border-radius: 2px;
}
.nav_line {
    height: 1px;
    width: 20px;
    margin: 9px 0;
    background-color: #999;
}
.nav_main {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 9;
    padding: 40px 0 0;
    overflow-x: hidden;
    overflow-y: auto;
    background-color: #058d29;
}
.nav_list {
    display: block;
    border-bottom: 1px solid #fff;
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    line-height: 30px;
    padding: 0 20px;
    margin: 20px 0;
    width: 40vw;
}
.close_icon {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 20px;
    height: 20px;
    display: block;
}


.lunbo_main {
    width: 100vw;
    height: auto;
    overflow: hidden;
    position: relative;
}
.carousel {
    overflow-x: hidden;
    white-space: nowrap;
    display: flex;
    flex-wrap: nowrap;
}

.carousel-item {
    display: block;
    width: 100vw;
    min-width: 100vw;
    height: 233px;
    background-color: #ddd;
}
.carousel-item img {
    display: block;
    width: 100%;
    height: auto;
}